Vintage Coach Hunter

{
    "is_handbag_probability": 0.25,
    "coach_probability": 0.03,
    "vintage_probability": 0.04,
    "authenticity_confidence": 0.025,
    "image_quality_score": 0.26,
    "seller_misidentification_probability": 0.03,
    "confidence": 0.15,
    "recommended_max_bid": null,
    "estimated_resale_low": null,
    "estimated_resale_high": null,
    "possible_models": [],
    "positive_evidence": [
        "photo 1: a leather-looking dark strap with gold-tone clip hardware is visible, but no Coach-specific branding or construction is shown",
        "photo 1-3: detachable leather shoulder strap with metal clips present, consistent with a satchel-type bag existing"
    ],
    "negative_evidence": [
        "photo 1: only a detached strap is shown; the handbag itself is not visible",
        "photo 1: no readable COACH wordmark, horse-and-carriage, creed patch, serial\/style number, or hangtag is visible",
        "photo 1: the strap has prominent contrasting white stitching and bright gold-tone hardware, which does not establish vintage Coach manufacture",
        "photo 1-3: no handbag body shown, only a detached shoulder strap on a table",
        "photo 1-3: no creed patch, COACH wordmark, horse-and-carriage, or hangtag visible",
        "photo 1-3: strap has white contrast stitching on dark brown leather, atypical for vintage Coach classics which use tone-matched thread",
        "photo 1-3: strap hardware is bright gold-tone plated lobster clasp and buckle, not observed solid brass vintage hardware"
    ],
    "missing_information": [
        "Photos of the complete handbag, including front, back, sides, bottom, and corners",
        "Straight-on interior photo showing any creed patch, fabric tag, or serial\/style number",
        "Close-up photos of all hardware, zipper pulls, strap attachments, and any branding",
        "Interior lining, leather grain, edge finishing, and stitching details",
        "Seller-stated dimensions and confirmation that this strap belongs to the listed bag",
        "no photos of handbag body - front, back, sides, bottom, interior all absent",
        "creed patch not shown",
        "turnlock \/ closure not shown",
        "hangtag \/ wordmark not shown",
        "leather, lining, stitching of bag not visible",
        "hardware on bag not visible",
        "dimensions and scale not provided"
    ],
    "authenticity_concerns": [
        "photo 1: the item shown cannot be evaluated as a Coach handbag because the bag body and identifiers are absent",
        "photo 1-3: no handbag body visible so genuineness cannot be evaluated"
    ],
    "possible_model_reasoning": [
        "No Coach model can be matched because the handbag body, silhouette, closure, pockets, and interior are not shown.",
        "Era is unknown because no Coach identifier or dated construction detail is visible.",
        "Condition cannot be graded reliably; only a partial detached strap is shown, with no view of the bag or strap underside.",
        "no bag silhouette, closure, dimensions or identifiers visible so no Coach model can be matched",
        "strap alone with contrast stitching and bright plated hardware does not match vintage Coach glove-tanned construction",
        "Condition: cannot grade - no bag shown"
    ],
    "estimated_era": "unknown",
    "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: bright gold-tone clip, ring, and buckle-like hardware on a detached strap; no brand engraving is legible",
        "leather_description": "photo 1: dark brown or black leather-looking strap; actual leather type cannot be confirmed from this photo",
        "lining_description": "not_visible",
        "strap_construction": "photo 1: adjustable-looking strap with parallel contrasting white stitching and metal clip attachment; full attachment to a handbag is not shown",
        "stitching_description": "photo 1: visible contrasting white stitching appears generally parallel, but construction quality cannot be assessed fully"
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0021,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.35,
                "coach_probability": 0.03,
                "vintage_probability": 0.05,
                "authenticity_confidence": 0.02,
                "image_quality_score": 0.32,
                "seller_misidentification_probability": 0.03,
                "estimated_era": "unknown",
                "possible_models": [],
                "positive_evidence": [
                    "photo 1: a leather-looking dark strap with gold-tone clip hardware is visible, but no Coach-specific branding or construction is shown"
                ],
                "negative_evidence": [
                    "photo 1: only a detached strap is shown; the handbag itself is not visible",
                    "photo 1: no readable COACH wordmark, horse-and-carriage, creed patch, serial\/style number, or hangtag is visible",
                    "photo 1: the strap has prominent contrasting white stitching and bright gold-tone hardware, which does not establish vintage Coach manufacture"
                ],
                "missing_information": [
                    "Photos of the complete handbag, including front, back, sides, bottom, and corners",
                    "Straight-on interior photo showing any creed patch, fabric tag, or serial\/style number",
                    "Close-up photos of all hardware, zipper pulls, strap attachments, and any branding",
                    "Interior lining, leather grain, edge finishing, and stitching details",
                    "Seller-stated dimensions and confirmation that this strap belongs to the listed bag"
                ],
                "authenticity_concerns": [
                    "photo 1: the item shown cannot be evaluated as a Coach handbag because the bag body and identifiers are absent"
                ],
                "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: bright gold-tone clip, ring, and buckle-like hardware on a detached strap; no brand engraving is legible",
                    "leather_description": "photo 1: dark brown or black leather-looking strap; actual leather type cannot be confirmed from this photo",
                    "lining_description": "not_visible",
                    "strap_construction": "photo 1: adjustable-looking strap with parallel contrasting white stitching and metal clip attachment; full attachment to a handbag is not shown",
                    "stitching_description": "photo 1: visible contrasting white stitching appears generally parallel, but construction quality cannot be assessed fully"
                },
                "possible_model_reasoning": [
                    "No Coach model can be matched because the handbag body, silhouette, closure, pockets, and interior are not shown.",
                    "Era is unknown because no Coach identifier or dated construction detail is visible.",
                    "Condition cannot be graded reliably; only a partial detached strap is shown, with no view of the bag or strap underside."
                ],
                "confidence": 0.18,
                "recommended_max_bid": null,
                "estimated_resale_low": null,
                "estimated_resale_high": null
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [
                    "photo 1-3: no handbag body visible so genuineness cannot be evaluated"
                ],
                "authenticity_confidence": 0.03,
                "coach_probability": 0.03,
                "confidence": 0.12,
                "estimated_era": "unknown",
                "estimated_resale_high": null,
                "estimated_resale_low": null,
                "image_quality_score": 0.2,
                "is_handbag_probability": 0.15,
                "missing_information": [
                    "no photos of handbag body - front, back, sides, bottom, interior all absent",
                    "creed patch not shown",
                    "turnlock \/ closure not shown",
                    "hangtag \/ wordmark not shown",
                    "leather, lining, stitching of bag not visible",
                    "hardware on bag not visible",
                    "dimensions and scale not provided"
                ],
                "negative_evidence": [
                    "photo 1-3: no handbag body shown, only a detached shoulder strap on a table",
                    "photo 1-3: no creed patch, COACH wordmark, horse-and-carriage, or hangtag visible",
                    "photo 1-3: strap has white contrast stitching on dark brown leather, atypical for vintage Coach classics which use tone-matched thread",
                    "photo 1-3: strap hardware is bright gold-tone plated lobster clasp and buckle, not observed solid brass vintage hardware"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "bag hardware not visible; strap only shows bright gold-tone lobster clasp, rings and buckle",
                    "leather_description": "bag leather not visible; strap only is dark brown smooth leather",
                    "lining_description": "not_visible",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "bag stitching not visible; strap shows white contrast edge stitching",
                    "strap_construction": "dark brown adjustable strap with white contrast stitching, buckle adjustment and lobster-clasp ends visible coiled on table; attachment to bag not shown",
                    "turnlock_present": false
                },
                "positive_evidence": [
                    "photo 1-3: detachable leather shoulder strap with metal clips present, consistent with a satchel-type bag existing"
                ],
                "possible_model_reasoning": [
                    "no bag silhouette, closure, dimensions or identifiers visible so no Coach model can be matched",
                    "strap alone with contrast stitching and bright plated hardware does not match vintage Coach glove-tanned construction",
                    "Condition: cannot grade - no bag shown"
                ],
                "possible_models": [],
                "recommended_max_bid": null,
                "seller_misidentification_probability": 0.03,
                "vintage_probability": 0.03
            }
        }
    ],
    "_usage": [
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            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 27097,
            "output_tokens": 671,
            "total_tokens": 27768,
            "estimated_cost_usd": 0.012449
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 28837,
            "output_tokens": 1129,
            "total_tokens": 29966,
            "estimated_cost_usd": 0.006671
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}