Vintage Coach Hunter

{
    "is_handbag_probability": 0.98,
    "coach_probability": 0.075,
    "vintage_probability": 0.25,
    "authenticity_confidence": 0.07,
    "image_quality_score": 0.73,
    "seller_misidentification_probability": 0.075,
    "confidence": 0.75,
    "recommended_max_bid": 17.5,
    "estimated_resale_low": 17.5,
    "estimated_resale_high": 52.5,
    "possible_models": [],
    "positive_evidence": [
        "photo 1: substantial brown leather shoulder\/messenger bag with brass-tone hardware and an adjustable strap, a construction type that can overlap with vintage leather Coach bags",
        "photo 1: stitching appears generally even and the leather appears substantial",
        "photo 1-6: genuine leather handbag with brass-tone hardware in brown, broad population where vintage Coach hides"
    ],
    "negative_evidence": [
        "photo 1: front closure uses buckle straps and D-rings rather than a recognizable Coach turnlock",
        "photo 1: no legible COACH wordmark, horse-and-carriage, or leather hangtag is visible",
        "photo 1: the numerous applied pockets, decorative strap pieces, and overall messenger\/satchel design do not closely match the listed classic Coach silhouettes",
        "photo 3: back panel is plain and provides no visible Coach identifier",
        "listing text: seller identifies the brand as Unbranded; this is weak context only and does not establish Coach manufacture",
        "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch or hangtag visible",
        "photo 1,2,4,5: closure is buckle + D-ring strap, not Coach turnlock geometry",
        "photo 1,2: large exterior flap pocket with buckle tab silhouette matches no classic Coach catalog style (City Bag, Willis, Court, Station, Dinky)",
        "photo 1-6: contrast stitching and saddle-bag construction typical of generic handmade leather bags, not vintage Coach glove-tanned construction"
    ],
    "missing_information": [
        "photo 1-6: interior view, especially the back wall, slip pocket, lining, and any creed patch",
        "photo 1-6: close-up of every interior and exterior stamp, tag, zipper pull, and hardware engraving",
        "photo 1-6: full bottom and corner views",
        "photo 1-6: close-up of strap attachment points and stitching",
        "interior views emptied showing lining and any creed patch or fabric tags (photos 1-6 show exterior only)",
        "creed close-up in raking light and Made-in line",
        "bottom and corners and hardware engravings",
        "strap ends, buckle holes and scale\/dimensions"
    ],
    "authenticity_concerns": [
        "photo 1: absence of visible Coach identifiers combined with a generic, elaborate messenger-bag construction makes a non-Coach lookalike more likely",
        "photo 1: the buckle-and-pocket design is not sufficient to attribute the bag to Coach; no consistency check is possible without interior and identifier photos"
    ],
    "possible_model_reasoning": [
        "The silhouette is a large multi-pocket messenger\/satchel, but it does not closely correspond to a specific Coach catalog model visible from the exterior.",
        "Coach attribution remains low because no creed, serial, wordmark, hangtag, or recognizable Coach-specific closure is visible.",
        "Condition: Very Good to Good; visible creasing and surface wear are present, while corners, interior, odor, and strap underside are not fully assessable.",
        "No Coach model fits: buckle-front saddle with large exterior pocket and no turnlock is not a catalog classic; no creed\/serial to decode",
        "Condition: Very Good to Excellent exterior; even tone, no corner wear visible (photo 3), but no interior or bottom shown so grade capped"
    ],
    "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: brass-tone buckles, D-rings, strap hardware, and rivet-like fittings are visible; no Coach engraving is legible",
        "leather_description": "photo 1: brown smooth-to-lightly textured leather or leather-like material with visible creasing and tonal variation; exact leather type cannot be confirmed",
        "lining_description": "not_visible",
        "strap_construction": "photos 1, 4-6: wide adjustable shoulder strap with stitched edges and buckle\/D-ring attachments; apparent wear and creasing are visible",
        "stitching_description": "photos 1-6: double-row or closely spaced brown stitching is visible around panels and pockets and appears generally even, though fine construction details are not fully assessable"
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0026,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.98,
                "coach_probability": 0.12,
                "vintage_probability": 0.35,
                "authenticity_confidence": 0.1,
                "image_quality_score": 0.78,
                "seller_misidentification_probability": 0.12,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [
                    "photo 1: substantial brown leather shoulder\/messenger bag with brass-tone hardware and an adjustable strap, a construction type that can overlap with vintage leather Coach bags",
                    "photo 1: stitching appears generally even and the leather appears substantial"
                ],
                "negative_evidence": [
                    "photo 1: front closure uses buckle straps and D-rings rather than a recognizable Coach turnlock",
                    "photo 1: no legible COACH wordmark, horse-and-carriage, or leather hangtag is visible",
                    "photo 1: the numerous applied pockets, decorative strap pieces, and overall messenger\/satchel design do not closely match the listed classic Coach silhouettes",
                    "photo 3: back panel is plain and provides no visible Coach identifier",
                    "listing text: seller identifies the brand as Unbranded; this is weak context only and does not establish Coach manufacture"
                ],
                "missing_information": [
                    "photo 1-6: interior view, especially the back wall, slip pocket, lining, and any creed patch",
                    "photo 1-6: close-up of every interior and exterior stamp, tag, zipper pull, and hardware engraving",
                    "photo 1-6: full bottom and corner views",
                    "photo 1-6: close-up of strap attachment points and stitching"
                ],
                "authenticity_concerns": [
                    "photo 1: absence of visible Coach identifiers combined with a generic, elaborate messenger-bag construction makes a non-Coach lookalike more likely",
                    "photo 1: the buckle-and-pocket design is not sufficient to attribute the bag to Coach; no consistency check is possible without interior and identifier photos"
                ],
                "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: brass-tone buckles, D-rings, strap hardware, and rivet-like fittings are visible; no Coach engraving is legible",
                    "leather_description": "photo 1: brown smooth-to-lightly textured leather or leather-like material with visible creasing and tonal variation; exact leather type cannot be confirmed",
                    "lining_description": "not_visible",
                    "strap_construction": "photos 1, 4-6: wide adjustable shoulder strap with stitched edges and buckle\/D-ring attachments; apparent wear and creasing are visible",
                    "stitching_description": "photos 1-6: double-row or closely spaced brown stitching is visible around panels and pockets and appears generally even, though fine construction details are not fully assessable"
                },
                "possible_model_reasoning": [
                    "The silhouette is a large multi-pocket messenger\/satchel, but it does not closely correspond to a specific Coach catalog model visible from the exterior.",
                    "Coach attribution remains low because no creed, serial, wordmark, hangtag, or recognizable Coach-specific closure is visible.",
                    "Condition: Very Good to Good; visible creasing and surface wear are present, while corners, interior, odor, and strap underside are not fully assessable."
                ],
                "confidence": 0.72,
                "recommended_max_bid": 20,
                "estimated_resale_low": 15,
                "estimated_resale_high": 55
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [],
                "authenticity_confidence": 0.04,
                "coach_probability": 0.03,
                "confidence": 0.78,
                "estimated_era": "modern (2000s+), non-Coach",
                "estimated_resale_high": 50,
                "estimated_resale_low": 20,
                "image_quality_score": 0.68,
                "is_handbag_probability": 0.98,
                "missing_information": [
                    "interior views emptied showing lining and any creed patch or fabric tags (photos 1-6 show exterior only)",
                    "creed close-up in raking light and Made-in line",
                    "bottom and corners and hardware engravings",
                    "strap ends, buckle holes and scale\/dimensions"
                ],
                "negative_evidence": [
                    "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch or hangtag visible",
                    "photo 1,2,4,5: closure is buckle + D-ring strap, not Coach turnlock geometry",
                    "photo 1,2: large exterior flap pocket with buckle tab silhouette matches no classic Coach catalog style (City Bag, Willis, Court, Station, Dinky)",
                    "photo 1-6: contrast stitching and saddle-bag construction typical of generic handmade leather bags, not vintage Coach glove-tanned construction"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "brass-tone buckle and D-rings on front pocket tab and strap attachments; no turnlock; no engraved branding visible",
                    "leather_description": "medium brown smooth leather with soft sheen and grain variation; appears genuine leather but not glove-tanned patina of vintage Coach",
                    "lining_description": "not_visible",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "tan contrast stitching, double-row around flap and pocket edges, even but prominent",
                    "strap_construction": "flat narrow leather crossbody strap attached via D-rings and riveted tabs at sides",
                    "turnlock_present": false
                },
                "positive_evidence": [
                    "photo 1-6: genuine leather handbag with brass-tone hardware in brown, broad population where vintage Coach hides"
                ],
                "possible_model_reasoning": [
                    "No Coach model fits: buckle-front saddle with large exterior pocket and no turnlock is not a catalog classic; no creed\/serial to decode",
                    "Condition: Very Good to Excellent exterior; even tone, no corner wear visible (photo 3), but no interior or bottom shown so grade capped"
                ],
                "possible_models": [],
                "recommended_max_bid": 15,
                "seller_misidentification_probability": 0.03,
                "vintage_probability": 0.15
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
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            "output_tokens": 826,
            "total_tokens": 22344,
            "estimated_cost_usd": 0.01059
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 22388,
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}