Vintage Coach Hunter

{
    "is_handbag_probability": 0.955,
    "coach_probability": 0.045,
    "vintage_probability": 0.41,
    "authenticity_confidence": 0.04,
    "image_quality_score": 0.755,
    "seller_misidentification_probability": 0.055,
    "confidence": 0.795,
    "recommended_max_bid": 13.5,
    "estimated_resale_low": 17.5,
    "estimated_resale_high": 45,
    "possible_models": [],
    "positive_evidence": [
        "photo 1: Structured leather satchel\/backpack form with a top handle and long adjustable shoulder strap.",
        "photo 1: The bag appears to use genuine leather rather than nylon, canvas, or obvious faux material.",
        "photo 1: Brown leather and visible natural variation could superficially resemble vintage leather goods.",
        "photo 1-5: genuine leather handbag with patina"
    ],
    "negative_evidence": [
        "photo 1: No COACH wordmark, carriage, hangtag, or other Coach branding is visible.",
        "photo 1: The closure is a wide leather strap-and-loop design rather than a recognizable Coach turnlock.",
        "photo 1: The construction, central strap closure, backpack strap arrangement, and rectangular work-bag silhouette do not closely match the listed vintage Coach model catalog.",
        "photo 3: Visible hardware appears dark\/silver-tone rather than the solid brass hardware typical of many classic 1970s\u2013early 1990s Coach bags.",
        "photo 7: Interior\/side view shows a simple leather-lined or leather-paneled construction with no visible creed patch or fabric Coach tag.",
        "photo 1: Stitching is visible but the overall construction looks like a generic saddle-leather work or travel bag; silhouette alone is not Coach evidence.",
        "photo 1, photo 2, photo 5: no COACH wordmark, no horse-and-carriage, no creed patch, no hangtag visible",
        "photo 1, photo 2: closure is wide leather tab through leather loop, not Coach turnlock - turnlock absent",
        "photo 6: thin silver-tone wire rings for strap\/handle, not vintage Coach solid brass dogleash\/lobster hardware",
        "photo 3, photo 4: tall narrow vertical satchel ~8in W x 11in H silhouette with top handle + long crossbody strap matches no Coach catalog style",
        "photo 1-5: light contrast perimeter stitching and embossed border lines, raw suede strap backs, saddle-leather finish unlike Coach glove-tanned cowhide"
    ],
    "missing_information": [
        "photo request: straight-on photograph of the entire interior, especially the back wall and every pocket, to check for a sewn creed patch.",
        "photo request: close-up photographs of all interior labels, fabric tags, and any stamps.",
        "photo request: close-up of the closure hardware, strap attachments, and any zipper pulls for maker markings.",
        "photo request: bottom, corners, and full strap details.",
        "seller-stated dimensions, country of manufacture, and any provenance.",
        "photo of interior emptied and creed patch area \/ interior back wall close-up (photos 1-6 show exterior only)",
        "close-up of hardware stamps, rings and strap attachments",
        "bottom and corner close-ups to confirm wear",
        "maker mark \/ country stamp if any inside or under flap"
    ],
    "authenticity_concerns": [
        "No Coach identifier is visible in the supplied photos, so this is better treated as a generic leather bag than as an unidentified Coach.",
        "The dark\/silver-tone hardware and generic strap closure are not a strong match for the classic Coach construction suggested by the title.",
        "The seller's use of 'vintage' and the leather appearance do not establish Coach manufacture."
    ],
    "possible_model_reasoning": [
        "The rectangular flap-over work\/satchel shape with a central leather strap does not correspond convincingly to a listed vintage Coach model; no Coach model is proposed.",
        "The visible brown leather and apparent age suggest an older leather accessory, but without a creed, wordmark, serial, or Coach-specific hardware it cannot be dated as Coach.",
        "Condition: Good; visible scratches, creasing, surface wear, and edge wear are present (photos 1-7); strap appears intact, but the complete bottom and interior are not shown.",
        "No Coach model fits: vertical bookbag\/satchel with loop-tab closure, top handle and thin crossbody strap is not Willis (9927), Court (9870), Station (5130), City Bag (9790), Dinky (9375) or other classic; no creed, wordmark, brass turnlock or glove-tanned unlined construction to support Coach",
        "Condition: Very Good; exterior shows light scratches, scuffs and patina variation (photo 1, photo 5) but no corner blowouts, cracks or broken hardware visible; interior, bottom and strap fold not shown so capped",
        "Era: non-Coach saddle-leather craft satchel, modern handmade \/ import type, not datable to Coach era table"
    ],
    "estimated_era": "modern (2000s+), non-Coach",
    "observed_features": {
        "creed_present": false,
        "serial_or_style_number_present": false,
        "coach_wordmark_present": false,
        "turnlock_present": false,
        "hangtag_present": false,
        "creed_text": "not_visible",
        "serial_or_style_number": "not_visible",
        "hardware_description": "photo 1: Small dark\/silver-tone rings and strap fittings are visible; no Coach engraving is legible. No turnlock is visible.",
        "leather_description": "photos 1-7: Brown smooth, glossy leather with visible scuffs, creasing, and tonal variation; exact leather type is not determinable from photos.",
        "lining_description": "photo 7: Interior\/side construction is partially visible and appears leather or leather-like, but the complete lining and pocket layout are not shown.",
        "strap_construction": "photos 1-6: Long narrow adjustable shoulder\/backpack strap with leather keeper; short top handle attached by small rings.",
        "stitching_description": "photos 1-7: Exposed, generally even contrast stitching around the perimeter and straps; some irregularity and wear are visible."
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0084,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.93,
                "coach_probability": 0.06,
                "vintage_probability": 0.62,
                "authenticity_confidence": 0.05,
                "image_quality_score": 0.86,
                "seller_misidentification_probability": 0.08,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [
                    "photo 1: Structured leather satchel\/backpack form with a top handle and long adjustable shoulder strap.",
                    "photo 1: The bag appears to use genuine leather rather than nylon, canvas, or obvious faux material.",
                    "photo 1: Brown leather and visible natural variation could superficially resemble vintage leather goods."
                ],
                "negative_evidence": [
                    "photo 1: No COACH wordmark, carriage, hangtag, or other Coach branding is visible.",
                    "photo 1: The closure is a wide leather strap-and-loop design rather than a recognizable Coach turnlock.",
                    "photo 1: The construction, central strap closure, backpack strap arrangement, and rectangular work-bag silhouette do not closely match the listed vintage Coach model catalog.",
                    "photo 3: Visible hardware appears dark\/silver-tone rather than the solid brass hardware typical of many classic 1970s\u2013early 1990s Coach bags.",
                    "photo 7: Interior\/side view shows a simple leather-lined or leather-paneled construction with no visible creed patch or fabric Coach tag.",
                    "photo 1: Stitching is visible but the overall construction looks like a generic saddle-leather work or travel bag; silhouette alone is not Coach evidence."
                ],
                "missing_information": [
                    "photo request: straight-on photograph of the entire interior, especially the back wall and every pocket, to check for a sewn creed patch.",
                    "photo request: close-up photographs of all interior labels, fabric tags, and any stamps.",
                    "photo request: close-up of the closure hardware, strap attachments, and any zipper pulls for maker markings.",
                    "photo request: bottom, corners, and full strap details.",
                    "seller-stated dimensions, country of manufacture, and any provenance."
                ],
                "authenticity_concerns": [
                    "No Coach identifier is visible in the supplied photos, so this is better treated as a generic leather bag than as an unidentified Coach.",
                    "The dark\/silver-tone hardware and generic strap closure are not a strong match for the classic Coach construction suggested by the title.",
                    "The seller's use of 'vintage' and the leather appearance do not establish Coach manufacture."
                ],
                "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": false,
                    "hangtag_present": false,
                    "hardware_description": "photo 1: Small dark\/silver-tone rings and strap fittings are visible; no Coach engraving is legible. No turnlock is visible.",
                    "leather_description": "photos 1-7: Brown smooth, glossy leather with visible scuffs, creasing, and tonal variation; exact leather type is not determinable from photos.",
                    "lining_description": "photo 7: Interior\/side construction is partially visible and appears leather or leather-like, but the complete lining and pocket layout are not shown.",
                    "strap_construction": "photos 1-6: Long narrow adjustable shoulder\/backpack strap with leather keeper; short top handle attached by small rings.",
                    "stitching_description": "photos 1-7: Exposed, generally even contrast stitching around the perimeter and straps; some irregularity and wear are visible."
                },
                "possible_model_reasoning": [
                    "The rectangular flap-over work\/satchel shape with a central leather strap does not correspond convincingly to a listed vintage Coach model; no Coach model is proposed.",
                    "The visible brown leather and apparent age suggest an older leather accessory, but without a creed, wordmark, serial, or Coach-specific hardware it cannot be dated as Coach.",
                    "Condition: Good; visible scratches, creasing, surface wear, and edge wear are present (photos 1-7); strap appears intact, but the complete bottom and interior are not shown."
                ],
                "confidence": 0.84,
                "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": 0.03,
                "coach_probability": 0.03,
                "confidence": 0.75,
                "estimated_era": "modern (2000s+), non-Coach",
                "estimated_resale_high": 45,
                "estimated_resale_low": 20,
                "image_quality_score": 0.65,
                "is_handbag_probability": 0.98,
                "missing_information": [
                    "photo of interior emptied and creed patch area \/ interior back wall close-up (photos 1-6 show exterior only)",
                    "close-up of hardware stamps, rings and strap attachments",
                    "bottom and corner close-ups to confirm wear",
                    "maker mark \/ country stamp if any inside or under flap"
                ],
                "negative_evidence": [
                    "photo 1, photo 2, photo 5: no COACH wordmark, no horse-and-carriage, no creed patch, no hangtag visible",
                    "photo 1, photo 2: closure is wide leather tab through leather loop, not Coach turnlock - turnlock absent",
                    "photo 6: thin silver-tone wire rings for strap\/handle, not vintage Coach solid brass dogleash\/lobster hardware",
                    "photo 3, photo 4: tall narrow vertical satchel ~8in W x 11in H silhouette with top handle + long crossbody strap matches no Coach catalog style",
                    "photo 1-5: light contrast perimeter stitching and embossed border lines, raw suede strap backs, saddle-leather finish unlike Coach glove-tanned cowhide"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "silver-tone wire rings at top handle and shoulder strap attachments; no turnlock, no buckle, no zipper pull visible",
                    "leather_description": "medium tan \/ British-tan-like smooth saddle leather with glossy patina, scuffs and mottling; suede-like backs on straps visible",
                    "lining_description": "not_visible - interior never shown",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "light contrast straight stitching around flap, body and central tab; visible and even but not Coach-matched thread tone",
                    "strap_construction": "thin flat unadjustable-appearing long crossbody strap with knot\/loop keeper plus short top grab handle riveted\/ring-attached",
                    "turnlock_present": false
                },
                "positive_evidence": [
                    "photo 1-5: genuine leather handbag with patina"
                ],
                "possible_model_reasoning": [
                    "No Coach model fits: vertical bookbag\/satchel with loop-tab closure, top handle and thin crossbody strap is not Willis (9927), Court (9870), Station (5130), City Bag (9790), Dinky (9375) or other classic; no creed, wordmark, brass turnlock or glove-tanned unlined construction to support Coach",
                    "Condition: Very Good; exterior shows light scratches, scuffs and patina variation (photo 1, photo 5) but no corner blowouts, cracks or broken hardware visible; interior, bottom and strap fold not shown so capped",
                    "Era: non-Coach saddle-leather craft satchel, modern handmade \/ import type, not datable to Coach era table"
                ],
                "possible_models": [],
                "recommended_max_bid": 15,
                "seller_misidentification_probability": 0.03,
                "vintage_probability": 0.2
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 28777,
            "output_tokens": 918,
            "total_tokens": 29695,
            "estimated_cost_usd": 0.013714
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 30092,
            "output_tokens": 1397,
            "total_tokens": 31489,
            "estimated_cost_usd": 0.007136
        }
    ]
}