Vintage Coach Hunter

{
    "is_handbag_probability": 0.985,
    "coach_probability": 0.335,
    "vintage_probability": 0.565,
    "authenticity_confidence": 0.255,
    "image_quality_score": 0.805,
    "seller_misidentification_probability": 0.335,
    "confidence": 0.665,
    "recommended_max_bid": 18.5,
    "estimated_resale_low": 20,
    "estimated_resale_high": 57.5,
    "possible_models": [
        "Court (9870)",
        "City Bag (9790)"
    ],
    "positive_evidence": [
        "photo 1: leather shoulder-bag construction, adjustable strap, brass-tone turnlock, and generally vintage-inspired silhouette are compatible with the type of bag in which vintage Coach examples can occur",
        "photo 2: suede-like interior and substantial leather body are mildly consistent with older leather handbag construction",
        "photo 6: interior zip pocket is visible",
        "photo 1,5: brass-tone turnlock with slim oval tab and oval keeper, geometry broadly consistent with vintage turnlock",
        "photo 3-4,6: unlined suede-back interior with no fabric lining, correct for vintage glove-tanned classics",
        "photo 1-6: smooth full-grain leather with baseball-glove-like patina and even matched stitching",
        "photo 6: classic interior layout with zip pocket under flap, heavy leather appearance"
    ],
    "negative_evidence": [
        "photo 1: no legible COACH wordmark, horse-and-carriage mark, or hangtag is visible",
        "photo 3: no sewn Coach creed patch is visible on the interior back wall or flap",
        "photo 1: the central oval turnlock is unlike the characteristic vintage Coach rounded-rectangle turnlock geometry",
        "photo 1: decorative scalloped flap treatment and riveted strap tabs are not a strong match for the listed classic Coach silhouettes",
        "photo 6: the visible zipper and interior construction do not provide a Coach-specific identifier",
        "listing text: seller lists the bag as unbranded; this is weak context only and does not establish brand",
        "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch, or hangtag legibly visible",
        "photo 2: back panel is plain with no exterior slip pocket, unlike City Bag (9790) and many catalog flap styles",
        "photo 1,3: scalloped \/ contoured flap edge with decorative overlay seam is atypical for common 1980s-90s Coach flap classics",
        "photo 1-2: strap appears riveted to side tabs, no detachable brass dogleash \/ lobster clips or bead-chain hangtag visible"
    ],
    "missing_information": [
        "photo 6: clearer, fully emptied interior showing every wall and pocket for a possible creed patch or fabric tag",
        "photo 6: close-up of the small metal or leather element near the lower interior area, which is too obscured to identify",
        "photo 1: close-ups of the turnlock front and back, strap attachments, and zipper pull",
        "photos 2-5: bottom, side seams, corners, and full strap condition",
        "seller-stated dimensions and any country-of-origin marking",
        "creed patch straight-on in raking light not shown - photo 6 shows interior but no creed visible",
        "interior back wall \/ slip pocket where creed would sit not fully emptied and photographed",
        "hangtag both faces and chain not shown",
        "bottom \/ corners \/ sides close-ups not shown",
        "strap full length, buckle holes and fold point not shown",
        "hardware stamps \/ zipper brand stamp \/ Made in line not shown"
    ],
    "authenticity_concerns": [
        "The bag lacks any visible Coach identifier despite having enough interior and exterior coverage to look for one.",
        "The central oval clasp and scalloped decorative flap appear more characteristic of a generic vintage-style leather bag than a documented Coach classic.",
        "The shiny, highly uniform leather finish and decorative riveted strap construction are not especially consistent with a typical unlined glove-tanned Coach classic, although lighting limits this assessment."
    ],
    "possible_model_reasoning": [
        "No Coach model can be matched confidently: the clasp, scalloped flap, and strap construction do not closely correspond to the listed City Bag, Court, Willis, Station, Dinky, or Stewardess profiles.",
        "The absence of a visible creed or style number prevents era dating by Coach identifiers.",
        "Condition: Good to Very Good; visible surface scratches, scuffs, edge wear, and clasp scratches are present in photos 1-5; the interior and zipper are shown only partially, so odor, hidden stains, and full lining condition are unknown.",
        "No creed or serial visible so no decode possible; era from construction only: unlined suede-back glove-tanned + solid brass suggests 1970s-1990s US-era type construction, but insufficient for canonical NYC\/US era label so unknown.",
        "Closest catalog shapes are flap turnlock crossbodies like Court (9870) and City Bag (9790), but plain back with no slip pocket and scalloped overlay flap do not match exactly, so identification is low confidence.",
        "Condition: Very Good to Good; leather shows light scuffs and patina (photo 1-2), brass tarnished but intact (photo 5), interior shows light soiling \/ lint (photo 4) but no tears visible; capped at Very Good because bottom corners, full interior and strap fold not shown."
    ],
    "estimated_era": "modern (2000s+), non-Coach",
    "observed_features": {
        "creed_present": false,
        "serial_or_style_number_present": false,
        "coach_wordmark_present": false,
        "turnlock_present": true,
        "hangtag_present": false,
        "creed_text": "not_visible",
        "serial_or_style_number": "not_visible",
        "hardware_description": "photo 1 and photo 5: gold-tone oval turning clasp with a vertical rounded tab; strap attachments use small gold-tone rivets and buckles; no readable branding is visible",
        "leather_description": "photo 1 and photo 2: burgundy or oxblood leather with a smooth, glossy finish and visible surface scratches or rubbing; exact leather type is not determinable",
        "lining_description": "photo 3 and photo 6: apparent suede or leather-like brown interior with an interior zippered pocket; no fabric brand label is visible",
        "strap_construction": "photo 1 and photo 2: adjustable narrow leather shoulder strap with riveted side attachments and buckle adjustment",
        "stitching_description": "photo 1 through photo 5: generally even dark stitching, with some irregularity and visible wear along edges and flap seams"
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0084,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.98,
                "coach_probability": 0.22,
                "vintage_probability": 0.48,
                "authenticity_confidence": 0.16,
                "image_quality_score": 0.86,
                "seller_misidentification_probability": 0.22,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [
                    "photo 1: leather shoulder-bag construction, adjustable strap, brass-tone turnlock, and generally vintage-inspired silhouette are compatible with the type of bag in which vintage Coach examples can occur",
                    "photo 2: suede-like interior and substantial leather body are mildly consistent with older leather handbag construction",
                    "photo 6: interior zip pocket is visible"
                ],
                "negative_evidence": [
                    "photo 1: no legible COACH wordmark, horse-and-carriage mark, or hangtag is visible",
                    "photo 3: no sewn Coach creed patch is visible on the interior back wall or flap",
                    "photo 1: the central oval turnlock is unlike the characteristic vintage Coach rounded-rectangle turnlock geometry",
                    "photo 1: decorative scalloped flap treatment and riveted strap tabs are not a strong match for the listed classic Coach silhouettes",
                    "photo 6: the visible zipper and interior construction do not provide a Coach-specific identifier",
                    "listing text: seller lists the bag as unbranded; this is weak context only and does not establish brand"
                ],
                "missing_information": [
                    "photo 6: clearer, fully emptied interior showing every wall and pocket for a possible creed patch or fabric tag",
                    "photo 6: close-up of the small metal or leather element near the lower interior area, which is too obscured to identify",
                    "photo 1: close-ups of the turnlock front and back, strap attachments, and zipper pull",
                    "photos 2-5: bottom, side seams, corners, and full strap condition",
                    "seller-stated dimensions and any country-of-origin marking"
                ],
                "authenticity_concerns": [
                    "The bag lacks any visible Coach identifier despite having enough interior and exterior coverage to look for one.",
                    "The central oval clasp and scalloped decorative flap appear more characteristic of a generic vintage-style leather bag than a documented Coach classic.",
                    "The shiny, highly uniform leather finish and decorative riveted strap construction are not especially consistent with a typical unlined glove-tanned Coach classic, although lighting limits this assessment."
                ],
                "observed_features": {
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "serial_or_style_number_present": false,
                    "serial_or_style_number": "not_visible",
                    "coach_wordmark_present": false,
                    "turnlock_present": true,
                    "hangtag_present": false,
                    "hardware_description": "photo 1 and photo 5: gold-tone oval turning clasp with a vertical rounded tab; strap attachments use small gold-tone rivets and buckles; no readable branding is visible",
                    "leather_description": "photo 1 and photo 2: burgundy or oxblood leather with a smooth, glossy finish and visible surface scratches or rubbing; exact leather type is not determinable",
                    "lining_description": "photo 3 and photo 6: apparent suede or leather-like brown interior with an interior zippered pocket; no fabric brand label is visible",
                    "strap_construction": "photo 1 and photo 2: adjustable narrow leather shoulder strap with riveted side attachments and buckle adjustment",
                    "stitching_description": "photo 1 through photo 5: generally even dark stitching, with some irregularity and visible wear along edges and flap seams"
                },
                "possible_model_reasoning": [
                    "No Coach model can be matched confidently: the clasp, scalloped flap, and strap construction do not closely correspond to the listed City Bag, Court, Willis, Station, Dinky, or Stewardess profiles.",
                    "The absence of a visible creed or style number prevents era dating by Coach identifiers.",
                    "Condition: Good to Very Good; visible surface scratches, scuffs, edge wear, and clasp scratches are present in photos 1-5; the interior and zipper are shown only partially, so odor, hidden stains, and full lining condition are unknown."
                ],
                "confidence": 0.78,
                "recommended_max_bid": 12,
                "estimated_resale_low": 15,
                "estimated_resale_high": 45
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [],
                "authenticity_confidence": 0.35,
                "coach_probability": 0.45,
                "confidence": 0.55,
                "estimated_era": "unknown",
                "estimated_resale_high": 70,
                "estimated_resale_low": 25,
                "image_quality_score": 0.75,
                "is_handbag_probability": 0.99,
                "missing_information": [
                    "creed patch straight-on in raking light not shown - photo 6 shows interior but no creed visible",
                    "interior back wall \/ slip pocket where creed would sit not fully emptied and photographed",
                    "hangtag both faces and chain not shown",
                    "bottom \/ corners \/ sides close-ups not shown",
                    "strap full length, buckle holes and fold point not shown",
                    "hardware stamps \/ zipper brand stamp \/ Made in line not shown"
                ],
                "negative_evidence": [
                    "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch, or hangtag legibly visible",
                    "photo 2: back panel is plain with no exterior slip pocket, unlike City Bag (9790) and many catalog flap styles",
                    "photo 1,3: scalloped \/ contoured flap edge with decorative overlay seam is atypical for common 1980s-90s Coach flap classics",
                    "photo 1-2: strap appears riveted to side tabs, no detachable brass dogleash \/ lobster clips or bead-chain hangtag visible"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "photo 1,3,4,5: brass-tone turnlock with oval base and oval tab, solid-looking with age tarnish; brass-tone rivets at strap tabs; interior zip with silver-tone metal teeth in photo 6; no COACH engraving visible",
                    "leather_description": "photo 1-6: smooth burgundy \/ mahogany full-grain leather with satin sheen and patina, consistent with glove-tanned cowhide; unlined suede-back visible on flap underside in photo 3-4",
                    "lining_description": "photo 3-4,6: unlined - raw suede side of leather forms interior, burgundy-brown; interior zip pocket present in photo 6; no fabric lining visible",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "photo 1,2,5: even perimeter stitching matched to leather, decorative contoured stitch on flap overlay; no mismatched thread visible in provided resolution",
                    "strap_construction": "photo 1-2: narrow flat leather shoulder strap, buckle-adjustable, attached via riveted leather side tabs; full length, holes and clips not fully shown",
                    "turnlock_present": true
                },
                "positive_evidence": [
                    "photo 1,5: brass-tone turnlock with slim oval tab and oval keeper, geometry broadly consistent with vintage turnlock",
                    "photo 3-4,6: unlined suede-back interior with no fabric lining, correct for vintage glove-tanned classics",
                    "photo 1-6: smooth full-grain leather with baseball-glove-like patina and even matched stitching",
                    "photo 6: classic interior layout with zip pocket under flap, heavy leather appearance"
                ],
                "possible_model_reasoning": [
                    "No creed or serial visible so no decode possible; era from construction only: unlined suede-back glove-tanned + solid brass suggests 1970s-1990s US-era type construction, but insufficient for canonical NYC\/US era label so unknown.",
                    "Closest catalog shapes are flap turnlock crossbodies like Court (9870) and City Bag (9790), but plain back with no slip pocket and scalloped overlay flap do not match exactly, so identification is low confidence.",
                    "Condition: Very Good to Good; leather shows light scuffs and patina (photo 1-2), brass tarnished but intact (photo 5), interior shows light soiling \/ lint (photo 4) but no tears visible; capped at Very Good because bottom corners, full interior and strap fold not shown."
                ],
                "possible_models": [
                    "Court (9870)",
                    "City Bag (9790)"
                ],
                "recommended_max_bid": 25,
                "seller_misidentification_probability": 0.45,
                "vintage_probability": 0.65
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 33094,
            "output_tokens": 958,
            "total_tokens": 34052,
            "estimated_cost_usd": 0.015537
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 35568,
            "output_tokens": 1831,
            "total_tokens": 37399,
            "estimated_cost_usd": 0.008578
        }
    ]
}