Vintage Coach Hunter

{
    "is_handbag_probability": 0.975,
    "coach_probability": 0.11,
    "vintage_probability": 0.635,
    "authenticity_confidence": 0.085,
    "image_quality_score": 0.77,
    "seller_misidentification_probability": 0.11,
    "confidence": 0.78,
    "recommended_max_bid": 13.5,
    "estimated_resale_low": 15,
    "estimated_resale_high": 42.5,
    "possible_models": [],
    "positive_evidence": [
        "photo 1: leather suede-like exterior, structured satchel silhouette, and gold-tone chain strap are broadly compatible with some vintage Coach construction.",
        "photo 6: visible bottom panel and substantial stitched construction suggest a genuine leather or suede handbag rather than an obvious plastic or nylon bag."
    ],
    "negative_evidence": [
        "photo 1: no visible COACH wordmark, horse-and-carriage, hangtag, or other Coach identifier.",
        "photo 2: interior appears fabric-lined and quilted, which does not strongly match classic unlined glove-tanned Coach bags.",
        "photo 1: chain strap woven with matching green material is not a distinctive Coach vintage identifier and appears more typical of a generic fashion handbag.",
        "photo 4: interior construction and lining are generic and do not show a recognizable Coach creed patch.",
        "seller text: seller identifies the item only as 'Vintage' and provides no Coach-specific details or model information.",
        "photo 1-6: no creed patch, COACH wordmark, horse-and-carriage, or leather hangtag visible",
        "photo 4: quilted synthetic puffy lining in dark green - vintage Coach classics are unlined suede-back glove-tanned, not quilted nylon\/poly",
        "photo 1,2,3,5: gold-tone chain strap interwoven with green leather - not a Coach vintage strap type (no solid-brass buckle, dogleash clips, or wrapped-edge leather strap)",
        "photo 2,3,4: frame \/ big-mouth top with small ball studs, no Coach turnlock geometry present",
        "photo 1-6: all-over suede exterior with soft unstructured construction - not glove-tanned cowhide with solid brass"
    ],
    "missing_information": [
        "photo 2\/photo 4: no straight-on, well-lit view of the full interior back wall or interior pockets where a creed could be sewn.",
        "photo 2\/photo 4: no close-up of any interior fabric label, leather label, or hidden maker stamp.",
        "photo 1\/photo 3: no close-up of hardware, clasp, zipper pulls, or chain attachment points.",
        "photo 1\/photo 5: no readable view of any hangtag or exterior brand marking; seller states there are no tags.",
        "seller-stated dimensions and material composition should be confirmed.",
        "photo 4: interior shows no creed patch but no straight-on high-resolution shot of interior walls\/pockets to fully exclude a small tag",
        "photo 1-6: no COACH wordmark, hangtag, or creed close-up shown - request straight-on creed\/interior tag photo",
        "photo 1-6: no hardware stamp close-ups (chain, frame ends) to check maker marks"
    ],
    "authenticity_concerns": [
        "The bag has a generic lookalike profile without a visible Coach identifier; silhouette and suede alone are insufficient to attribute it to Coach.",
        "The fabric-lined interior and decorative chain strap are not a strong match for the classic unlined glove-tanned Coach styles most commonly confused with unbranded bags.",
        "No direct replica or transplanted-credential evidence is visible, but the absence of any brand marking prevents meaningful authentication assessment."
    ],
    "possible_model_reasoning": [
        "No Coach model is listed because the bag lacks a visible Coach identifier and does not closely match a confidently identifiable catalog silhouette.",
        "The seller's 'Big Mouth' wording is unverified listing text; the photos show a structured, open-top satchel but do not establish a Bonnie Cashin Big Mouth or Coach model.",
        "Condition appears Good rather than Excellent: photo 1 and photo 5 show nap variation and creasing on the suede, while photo 4 shows a wrinkled interior; odor cannot be assessed from photos.",
        "No Coach silhouette match: chain-strap suede big-mouth bag does not correspond to City Bag (9790), Dinky (9375), Court (9870), Willis (9927) or other catalog styles in shape, closure, strap or lining",
        "Era reasoning: quilted synthetic lining + interwoven chain strap + suede body points to 1980s-1990s department-store evening\/crossbody, not Coach glove-tanned era construction",
        "Condition: Very Good to Excellent; suede looks clean and uniform in photos 1-6, no corner wear-through visible, interior looks clean in photo 4, but bottom corners and odor not fully gradable from photos"
    ],
    "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": "Gold-tone chain strap with matching green material woven through it; small gold-tone rings and other attachment hardware visible. No Coach engraving is legible.",
        "leather_description": "Green suede or suede-like leather exterior is visible, with nap variation, creasing, and light surface wear. Exact material cannot be confirmed from photos.",
        "lining_description": "Dark green quilted or padded fabric lining is visible in photo 4; it appears wrinkled and somewhat worn. No label is visible.",
        "strap_construction": "Long crossbody chain strap with green material woven through the chain; attached at upper side rings.",
        "stitching_description": "Visible exterior seams are generally straight and machine-stitched, with some unevenness and loose-looking fibers near edges; no distinctive Coach construction detail is visible."
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0038,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.98,
                "coach_probability": 0.18,
                "vintage_probability": 0.72,
                "authenticity_confidence": 0.12,
                "image_quality_score": 0.86,
                "seller_misidentification_probability": 0.18,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [
                    "photo 1: leather suede-like exterior, structured satchel silhouette, and gold-tone chain strap are broadly compatible with some vintage Coach construction.",
                    "photo 6: visible bottom panel and substantial stitched construction suggest a genuine leather or suede handbag rather than an obvious plastic or nylon bag."
                ],
                "negative_evidence": [
                    "photo 1: no visible COACH wordmark, horse-and-carriage, hangtag, or other Coach identifier.",
                    "photo 2: interior appears fabric-lined and quilted, which does not strongly match classic unlined glove-tanned Coach bags.",
                    "photo 1: chain strap woven with matching green material is not a distinctive Coach vintage identifier and appears more typical of a generic fashion handbag.",
                    "photo 4: interior construction and lining are generic and do not show a recognizable Coach creed patch.",
                    "seller text: seller identifies the item only as 'Vintage' and provides no Coach-specific details or model information."
                ],
                "missing_information": [
                    "photo 2\/photo 4: no straight-on, well-lit view of the full interior back wall or interior pockets where a creed could be sewn.",
                    "photo 2\/photo 4: no close-up of any interior fabric label, leather label, or hidden maker stamp.",
                    "photo 1\/photo 3: no close-up of hardware, clasp, zipper pulls, or chain attachment points.",
                    "photo 1\/photo 5: no readable view of any hangtag or exterior brand marking; seller states there are no tags.",
                    "seller-stated dimensions and material composition should be confirmed."
                ],
                "authenticity_concerns": [
                    "The bag has a generic lookalike profile without a visible Coach identifier; silhouette and suede alone are insufficient to attribute it to Coach.",
                    "The fabric-lined interior and decorative chain strap are not a strong match for the classic unlined glove-tanned Coach styles most commonly confused with unbranded bags.",
                    "No direct replica or transplanted-credential evidence is visible, but the absence of any brand marking prevents meaningful authentication 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": false,
                    "hangtag_present": false,
                    "hardware_description": "Gold-tone chain strap with matching green material woven through it; small gold-tone rings and other attachment hardware visible. No Coach engraving is legible.",
                    "leather_description": "Green suede or suede-like leather exterior is visible, with nap variation, creasing, and light surface wear. Exact material cannot be confirmed from photos.",
                    "lining_description": "Dark green quilted or padded fabric lining is visible in photo 4; it appears wrinkled and somewhat worn. No label is visible.",
                    "strap_construction": "Long crossbody chain strap with green material woven through the chain; attached at upper side rings.",
                    "stitching_description": "Visible exterior seams are generally straight and machine-stitched, with some unevenness and loose-looking fibers near edges; no distinctive Coach construction detail is visible."
                },
                "possible_model_reasoning": [
                    "No Coach model is listed because the bag lacks a visible Coach identifier and does not closely match a confidently identifiable catalog silhouette.",
                    "The seller's 'Big Mouth' wording is unverified listing text; the photos show a structured, open-top satchel but do not establish a Bonnie Cashin Big Mouth or Coach model.",
                    "Condition appears Good rather than Excellent: photo 1 and photo 5 show nap variation and creasing on the suede, while photo 4 shows a wrinkled interior; odor cannot be assessed from photos."
                ],
                "confidence": 0.78,
                "recommended_max_bid": 15,
                "estimated_resale_low": 15,
                "estimated_resale_high": 50
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [],
                "authenticity_confidence": 0.05,
                "coach_probability": 0.04,
                "confidence": 0.78,
                "estimated_era": "modern (2000s+), non-Coach",
                "estimated_resale_high": 35,
                "estimated_resale_low": 15,
                "image_quality_score": 0.68,
                "is_handbag_probability": 0.97,
                "missing_information": [
                    "photo 4: interior shows no creed patch but no straight-on high-resolution shot of interior walls\/pockets to fully exclude a small tag",
                    "photo 1-6: no COACH wordmark, hangtag, or creed close-up shown - request straight-on creed\/interior tag photo",
                    "photo 1-6: no hardware stamp close-ups (chain, frame ends) to check maker marks"
                ],
                "negative_evidence": [
                    "photo 1-6: no creed patch, COACH wordmark, horse-and-carriage, or leather hangtag visible",
                    "photo 4: quilted synthetic puffy lining in dark green - vintage Coach classics are unlined suede-back glove-tanned, not quilted nylon\/poly",
                    "photo 1,2,3,5: gold-tone chain strap interwoven with green leather - not a Coach vintage strap type (no solid-brass buckle, dogleash clips, or wrapped-edge leather strap)",
                    "photo 2,3,4: frame \/ big-mouth top with small ball studs, no Coach turnlock geometry present",
                    "photo 1-6: all-over suede exterior with soft unstructured construction - not glove-tanned cowhide with solid brass"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "gold-tone chain with green leather woven through, small round studs\/balls at frame ends; plated tone, not solid brass vintage Coach hardware",
                    "leather_description": "emerald green suede with napped texture, soft slouchy body, diagonal quilt-stitch detail on front",
                    "lining_description": "dark green quilted synthetic puffy lining visible in photo 4, with interior slip pocket",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "visible straight seams on suede body, quilt-diagonal stitching on front panel; no tight tone-matched Coach classic stitching detail visible",
                    "strap_construction": "long chain crossbody strap interlaced with matching green leather, attached via small leather loops and metal rings",
                    "turnlock_present": false
                },
                "positive_evidence": [],
                "possible_model_reasoning": [
                    "No Coach silhouette match: chain-strap suede big-mouth bag does not correspond to City Bag (9790), Dinky (9375), Court (9870), Willis (9927) or other catalog styles in shape, closure, strap or lining",
                    "Era reasoning: quilted synthetic lining + interwoven chain strap + suede body points to 1980s-1990s department-store evening\/crossbody, not Coach glove-tanned era construction",
                    "Condition: Very Good to Excellent; suede looks clean and uniform in photos 1-6, no corner wear-through visible, interior looks clean in photo 4, but bottom corners and odor not fully gradable from photos"
                ],
                "possible_models": [],
                "recommended_max_bid": 12,
                "seller_misidentification_probability": 0.04,
                "vintage_probability": 0.55
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 17782,
            "output_tokens": 1035,
            "total_tokens": 18817,
            "estimated_cost_usd": 0.009597
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 18120,
            "output_tokens": 1476,
            "total_tokens": 19596,
            "estimated_cost_usd": 0.004805
        }
    ]
}