Vintage Coach Hunter

{
    "is_handbag_probability": 0.02,
    "coach_probability": 0.01,
    "vintage_probability": 0.02,
    "authenticity_confidence": 0.01,
    "image_quality_score": 0.775,
    "seller_misidentification_probability": 0.025,
    "confidence": 0.92,
    "recommended_max_bid": 5,
    "estimated_resale_low": 5,
    "estimated_resale_high": 20,
    "possible_models": [],
    "positive_evidence": [],
    "negative_evidence": [
        "photo 1: listing shows a standalone replacement shoulder strap being worn with a separate light-colored bag, not a Coach handbag.",
        "photo 2: strap has a black-and-gray floral woven textile body with brown leather end tabs; no Coach wordmark, creed, horse-and-carriage, or recognizable Coach construction is visible.",
        "photo 2: seller's own annotations identify nylon and cowhide leather ends, consistent with a modern accessory rather than a vintage Coach handbag.",
        "photo 3: the strap is shown attached to a separate bag, with no Coach identifier visible on the strap or bag.",
        "photo 1: object worn is a 2-inch wide fabric guitar-style replacement strap, not a handbag",
        "photo 2: strap body is woven nylon with vintage floral pattern with brown cowhide leather ends - nylon\/fabric strap is excluded per triage",
        "photo 1, photo 2, photo 3: no Coach creed patch, wordmark, horse-and-carriage, turnlock, or leather hangtag visible",
        "photo 2: modern rotating lobster-type hardware and slider buckle, not vintage solid-brass Coach hardware"
    ],
    "missing_information": [
        "photo 2: no close-up of any brand stamp on the leather ends or hardware, although none is apparent in the provided view.",
        "The listing does not provide photos of the separate bag to determine its brand; this assessment concerns the replacement strap.",
        "No underside, stitching close-up, or hardware detail sufficient for material and construction authentication.",
        "no handbag is shown in any photo - only a replacement shoulder strap",
        "no creed, serial, wordmark, hangtag or Coach hardware to assess",
        "no leather handbag body, lining, turnlock or construction details present"
    ],
    "authenticity_concerns": [
        "The item is a generic\/unbranded replacement strap rather than a Coach handbag; its floral textile pattern and rotating hardware do not establish Coach manufacture.",
        "No Coach identifier is visible in the provided photos."
    ],
    "possible_model_reasoning": [
        "This is not a Coach handbag and no Coach model match is applicable.",
        "Condition: appears new or near-new in the product photos, with no obvious wear visible; underlying durability, odor, and hardware function are unknown.",
        "no handbag body present so no Coach model match possible",
        "strap materials (nylon webbing) and modern swivel hardware are inconsistent with vintage Coach glove-tanned construction",
        "seller correctly labels as Unbranded strap replacement, consistent with 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": "photo 2: brass-tone rectangular adjuster, riveted leather end tabs, and rotating lobster-style clips are visible; no Coach engraving is legible.",
        "leather_description": "photo 2: brown leather appears limited to the end tabs; the main strap is seller-described as nylon and appears woven\/textile in the photo.",
        "lining_description": "not_visible",
        "strap_construction": "photos 1-3: approximately 2-inch-wide adjustable crossbody strap with patterned woven body, brown leather end sections, buckled adjustment, and detachable rotating clips.",
        "stitching_description": "photo 2: visible stitching around the leather end tabs appears even at this resolution; detailed construction cannot be assessed."
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0023,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.02,
                "coach_probability": 0.01,
                "vintage_probability": 0.02,
                "authenticity_confidence": 0.01,
                "image_quality_score": 0.9,
                "seller_misidentification_probability": 0.03,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [],
                "negative_evidence": [
                    "photo 1: listing shows a standalone replacement shoulder strap being worn with a separate light-colored bag, not a Coach handbag.",
                    "photo 2: strap has a black-and-gray floral woven textile body with brown leather end tabs; no Coach wordmark, creed, horse-and-carriage, or recognizable Coach construction is visible.",
                    "photo 2: seller's own annotations identify nylon and cowhide leather ends, consistent with a modern accessory rather than a vintage Coach handbag.",
                    "photo 3: the strap is shown attached to a separate bag, with no Coach identifier visible on the strap or bag."
                ],
                "missing_information": [
                    "photo 2: no close-up of any brand stamp on the leather ends or hardware, although none is apparent in the provided view.",
                    "The listing does not provide photos of the separate bag to determine its brand; this assessment concerns the replacement strap.",
                    "No underside, stitching close-up, or hardware detail sufficient for material and construction authentication."
                ],
                "authenticity_concerns": [
                    "The item is a generic\/unbranded replacement strap rather than a Coach handbag; its floral textile pattern and rotating hardware do not establish Coach manufacture.",
                    "No Coach identifier is visible in the provided 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 2: brass-tone rectangular adjuster, riveted leather end tabs, and rotating lobster-style clips are visible; no Coach engraving is legible.",
                    "leather_description": "photo 2: brown leather appears limited to the end tabs; the main strap is seller-described as nylon and appears woven\/textile in the photo.",
                    "lining_description": "not_visible",
                    "strap_construction": "photos 1-3: approximately 2-inch-wide adjustable crossbody strap with patterned woven body, brown leather end sections, buckled adjustment, and detachable rotating clips.",
                    "stitching_description": "photo 2: visible stitching around the leather end tabs appears even at this resolution; detailed construction cannot be assessed."
                },
                "possible_model_reasoning": [
                    "This is not a Coach handbag and no Coach model match is applicable.",
                    "Condition: appears new or near-new in the product photos, with no obvious wear visible; underlying durability, odor, and hardware function are unknown."
                ],
                "confidence": 0.94,
                "recommended_max_bid": 5,
                "estimated_resale_low": 5,
                "estimated_resale_high": 20
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [],
                "authenticity_confidence": 0.01,
                "coach_probability": 0.01,
                "confidence": 0.9,
                "estimated_era": "modern (2000s+), non-Coach",
                "estimated_resale_high": null,
                "estimated_resale_low": null,
                "image_quality_score": 0.65,
                "is_handbag_probability": 0.02,
                "missing_information": [
                    "no handbag is shown in any photo - only a replacement shoulder strap",
                    "no creed, serial, wordmark, hangtag or Coach hardware to assess",
                    "no leather handbag body, lining, turnlock or construction details present"
                ],
                "negative_evidence": [
                    "photo 1: object worn is a 2-inch wide fabric guitar-style replacement strap, not a handbag",
                    "photo 2: strap body is woven nylon with vintage floral pattern with brown cowhide leather ends - nylon\/fabric strap is excluded per triage",
                    "photo 1, photo 2, photo 3: no Coach creed patch, wordmark, horse-and-carriage, turnlock, or leather hangtag visible",
                    "photo 2: modern rotating lobster-type hardware and slider buckle, not vintage solid-brass Coach hardware"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "brass-tone slider buckle and rotating lobster clasps on leather ends, modern replacement-strap hardware",
                    "leather_description": "brown cowhide leather end tabs only; main strap is woven nylon with black\/white vintage floral pattern",
                    "lining_description": "not_visible",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "perimeter stitching on leather end tabs visible in photo 2; no handbag stitching to assess",
                    "strap_construction": "2-inch wide adjustable 36-56 inch woven nylon guitar-style replacement strap with leather ends and swivel clasps",
                    "turnlock_present": false
                },
                "positive_evidence": [],
                "possible_model_reasoning": [
                    "no handbag body present so no Coach model match possible",
                    "strap materials (nylon webbing) and modern swivel hardware are inconsistent with vintage Coach glove-tanned construction",
                    "seller correctly labels as Unbranded strap replacement, consistent with photos"
                ],
                "possible_models": [],
                "recommended_max_bid": null,
                "seller_misidentification_probability": 0.02,
                "vintage_probability": 0.02
            }
        }
    ],
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}