Vintage Coach Hunter

{
    "is_handbag_probability": 0.115,
    "coach_probability": 0.02,
    "vintage_probability": 0.015,
    "authenticity_confidence": 0.02,
    "image_quality_score": 0.8,
    "seller_misidentification_probability": 0.05,
    "confidence": 0.91,
    "recommended_max_bid": 6.5,
    "estimated_resale_low": 5,
    "estimated_resale_high": 22.5,
    "possible_models": [],
    "positive_evidence": [],
    "negative_evidence": [
        "photo 1: item is a backpack with multiple zippered compartments, not a typical Coach vintage handbag",
        "photo 1: silver-tone plated zipper hardware and tassel hardware are visible, with no Coach engraving",
        "photo 2: exterior has synthetic-looking pebbled material and narrow modern backpack straps",
        "photo 4: interior has shiny black synthetic\/polyester lining rather than the unlined suede interior typical of many vintage Coach classics",
        "photo 5: construction includes modern backpack strap attachments and silver-tone hardware, with no visible Coach branding",
        "listing description: seller identifies the material as faux leather",
        "photo 1,2,5,6: small zip backpack silhouette with top handle and dual adjustable shoulder straps, not a catalog Coach classic shape",
        "photo 1-6: black pebbled faux leather as stated by seller, not glove-tanned cowhide",
        "photo 1,3: silver-tone coil zippers with plain bar pull and tassel fob, not Talon solid brass",
        "photo 4: black shiny polyester interior with zip pocket and slip pockets, no leather creed patch visible",
        "photo 1-6: no COACH wordmark, horse-and-carriage, hangtag, or turnlock visible"
    ],
    "missing_information": [
        "photo 1-6: no dedicated close-up of every exterior panel or zipper pull, although no Coach identifier is apparent in the supplied views",
        "photo 2-4: no separate close-up of a sewn interior brand label or care tag",
        "photo 2: underside and full strap adjustment hardware are not shown in detail",
        "No creed patch visible in interior photos; no further photos needed to exclude vintage Coach given faux material"
    ],
    "authenticity_concerns": [
        "photo 1-6: no creed, Coach wordmark, horse-and-carriage mark, hangtag, or style\/serial identifier is visible",
        "photo 4: shiny synthetic lining and faux-leather construction are inconsistent with the classic vintage Coach construction sought by this tool",
        "photo 1-6: overall modern synthetic backpack construction is characteristic of an unbranded lookalike rather than Coach vintage leather goods",
        "photo 1-6: faux \/ PU leather material excludes vintage Coach glove-tanned production",
        "photo 3-4: shiny black polyester lining inconsistent with unlined vintage Coach classics",
        "photo 1-6: silver-tone lightweight zippers and hardware, no solid brass, no Coach engraving"
    ],
    "possible_model_reasoning": [
        "Not a Coach model: faux material, polyester lining, silver hardware and backpack construction are inconsistent with all vintage Coach eras",
        "Condition: Good to Very Good as modern used backpack; light wear only visible, interior lining intact (photo 4), no basis for vintage condition premium"
    ],
    "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 and photo 3: silver-tone zipper hardware; tassel zipper pulls; no visible brand engraving",
        "leather_description": "photo 1-3 and photo 5: black pebbled faux-leather or synthetic material as stated by the seller; not visibly natural glove-tanned leather",
        "lining_description": "photo 4: shiny black synthetic lining with one zip pocket and multiple open pockets",
        "strap_construction": "photo 2 and photo 5: two narrow adjustable backpack straps with silver-tone attachment hardware; top carry handle",
        "stitching_description": "photo 1-5: visible machine stitching appears generally even; no distinctive vintage Coach construction is apparent"
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0019,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.08,
                "coach_probability": 0.02,
                "vintage_probability": 0.01,
                "authenticity_confidence": 0.02,
                "image_quality_score": 0.9,
                "seller_misidentification_probability": 0.08,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [],
                "negative_evidence": [
                    "photo 1: item is a backpack with multiple zippered compartments, not a typical Coach vintage handbag",
                    "photo 1: silver-tone plated zipper hardware and tassel hardware are visible, with no Coach engraving",
                    "photo 2: exterior has synthetic-looking pebbled material and narrow modern backpack straps",
                    "photo 4: interior has shiny black synthetic\/polyester lining rather than the unlined suede interior typical of many vintage Coach classics",
                    "photo 5: construction includes modern backpack strap attachments and silver-tone hardware, with no visible Coach branding",
                    "listing description: seller identifies the material as faux leather"
                ],
                "missing_information": [
                    "photo 1-6: no dedicated close-up of every exterior panel or zipper pull, although no Coach identifier is apparent in the supplied views",
                    "photo 2-4: no separate close-up of a sewn interior brand label or care tag",
                    "photo 2: underside and full strap adjustment hardware are not shown in detail"
                ],
                "authenticity_concerns": [
                    "photo 1-6: no creed, Coach wordmark, horse-and-carriage mark, hangtag, or style\/serial identifier is visible",
                    "photo 4: shiny synthetic lining and faux-leather construction are inconsistent with the classic vintage Coach construction sought by this tool",
                    "photo 1-6: overall modern synthetic backpack construction is characteristic of an unbranded lookalike rather than Coach vintage leather goods"
                ],
                "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 and photo 3: silver-tone zipper hardware; tassel zipper pulls; no visible brand engraving",
                    "leather_description": "photo 1-3 and photo 5: black pebbled faux-leather or synthetic material as stated by the seller; not visibly natural glove-tanned leather",
                    "lining_description": "photo 4: shiny black synthetic lining with one zip pocket and multiple open pockets",
                    "strap_construction": "photo 2 and photo 5: two narrow adjustable backpack straps with silver-tone attachment hardware; top carry handle",
                    "stitching_description": "photo 1-5: visible machine stitching appears generally even; no distinctive vintage Coach construction is apparent"
                },
                "possible_model_reasoning": [],
                "confidence": 0.94,
                "recommended_max_bid": 5,
                "estimated_resale_low": 5,
                "estimated_resale_high": 25
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [
                    "photo 1-6: faux \/ PU leather material excludes vintage Coach glove-tanned production",
                    "photo 3-4: shiny black polyester lining inconsistent with unlined vintage Coach classics",
                    "photo 1-6: silver-tone lightweight zippers and hardware, no solid brass, no Coach engraving"
                ],
                "authenticity_confidence": 0.02,
                "coach_probability": 0.02,
                "confidence": 0.88,
                "estimated_era": "modern (2000s+), non-Coach",
                "estimated_resale_high": 20,
                "estimated_resale_low": 5,
                "image_quality_score": 0.7,
                "is_handbag_probability": 0.15,
                "missing_information": [
                    "No creed patch visible in interior photos; no further photos needed to exclude vintage Coach given faux material"
                ],
                "negative_evidence": [
                    "photo 1,2,5,6: small zip backpack silhouette with top handle and dual adjustable shoulder straps, not a catalog Coach classic shape",
                    "photo 1-6: black pebbled faux leather as stated by seller, not glove-tanned cowhide",
                    "photo 1,3: silver-tone coil zippers with plain bar pull and tassel fob, not Talon solid brass",
                    "photo 4: black shiny polyester interior with zip pocket and slip pockets, no leather creed patch visible",
                    "photo 1-6: no COACH wordmark, horse-and-carriage, hangtag, or turnlock visible"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "silver-tone coil zippers, rectangular bar pull and tassel cap, silver backpack strap buckles; lightweight plated appearance, not solid brass",
                    "leather_description": "black faux \/ PU leather with pebbled emboss, uniform sheen, as seller states Faux leather",
                    "lining_description": "black shiny polyester \/ synthetic lining in main and front compartments",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "straight machine stitching in matching black thread, visible topstitching at seams",
                    "strap_construction": "two adjustable narrow faux-leather backpack shoulder straps with metal sliders plus small top grab handle",
                    "turnlock_present": false
                },
                "positive_evidence": [],
                "possible_model_reasoning": [
                    "Not a Coach model: faux material, polyester lining, silver hardware and backpack construction are inconsistent with all vintage Coach eras",
                    "Condition: Good to Very Good as modern used backpack; light wear only visible, interior lining intact (photo 4), no basis for vintage condition premium"
                ],
                "possible_models": [],
                "recommended_max_bid": 8,
                "seller_misidentification_probability": 0.02,
                "vintage_probability": 0.02
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 17756,
            "output_tokens": 705,
            "total_tokens": 18461,
            "estimated_cost_usd": 0.008794
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 18099,
            "output_tokens": 1158,
            "total_tokens": 19257,
            "estimated_cost_usd": 0.004546
        }
    ]
}