Vintage Coach Hunter

{
    "is_handbag_probability": 0.02,
    "coach_probability": 0.215,
    "vintage_probability": 0.08,
    "authenticity_confidence": 0.15,
    "image_quality_score": 0.815,
    "seller_misidentification_probability": 0.435,
    "confidence": 0.76,
    "recommended_max_bid": 8,
    "estimated_resale_low": 6.5,
    "estimated_resale_high": 22.5,
    "possible_models": [],
    "positive_evidence": [
        "photo 1: pink leather-looking adjustable strap with gold-tone swivel lobster clips and generally neat edge stitching could be compatible with a modern replacement handbag strap.",
        "photo 2: adjustable buckle construction and strap length are consistent with a detachable accessory strap, but not specifically Coach.",
        "photo 1,5: large dogleash swivel clips with O-rings consistent in type with Coach detachable straps",
        "photo 2,3,4: buckle-adjustable leather strap construction similar to modern Coach crossbody straps",
        "seller text states matches Coach based on online pics (weak untrusted evidence)"
    ],
    "negative_evidence": [
        "photo 1: the item is a strap only, not a handbag.",
        "photo 1: no legible COACH wordmark, horse-and-carriage, creed, serial, or other Coach identifier is visible.",
        "photo 1: hardware appears bright, polished, and modern rather than the heavier aged solid-brass hardware typical of vintage Coach.",
        "photo 5: the large swivel clips and rings are generic-looking and provide no brand-specific evidence.",
        "photo 6: the strap appears machine-stitched and finished, but the construction is common among many modern accessory brands.",
        "photo 1-6: object is a detachable shoulder strap only, not a handbag",
        "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch, or hangtag visible",
        "photo 1,5: dogleash clips unmarked in photos; vintage Coach brass clips typically unmarked but modern Coach hardware is engraved",
        "photo 1-6: smooth pink leather with dark painted edges, not vintage unlined glove-tanned cowhide"
    ],
    "missing_information": [
        "photo 1-6: no close-up of any reverse side, end tab, or hidden stamp where a brand mark might appear.",
        "photo 1-6: no original bag or provenance is shown.",
        "photo 1-6: material composition is not verifiable from photos; the strap may be leather, bonded leather, or synthetic leather.",
        "photo 1-6: seller-stated length is not independently measured.",
        "no handbag present to assess - only detachable strap shown",
        "close-up of any stamps on dogleash clips or buckle not shown",
        "no creed \/ wordmark \/ hangtag can be checked because no bag included",
        "leather edge and backside markings not shown"
    ],
    "authenticity_concerns": [
        "photo 1: the bright modern hardware and generic strap construction do not support attribution to vintage Coach.",
        "photo 1: seller's statement that it matches Coach is not corroborated by any visible Coach identifier.",
        "photo 1-6: strap-only listing with no creed, wordmark, or hardware stamps visible to verify Coach manufacture",
        "no Coach identifier present on detachable part alone; replacement straps are rarely marked"
    ],
    "possible_model_reasoning": [
        "This is an accessory strap rather than a handbag, so no Coach handbag model can be assigned.",
        "The visible construction is more consistent with a modern generic replacement strap than a documented vintage Coach component; no era-specific identifier is visible.",
        "Condition appears Good to Very Good from photos: light handling\/use is visible, but no obvious major cracking, tears, or broken hardware; unseen reverse wear and function remain unknown.",
        "no handbag present so no Coach model can be matched; strap alone cannot be tied to Willis (9927), Court (9870), Station (5130) or other dogleash-strap models",
        "bubble-gum pink with gold-tone hardware suggests modern (2000s+) replacement \/ accessory strap if Coach, not vintage glove-tanned era",
        "Condition: Good to Very Good as strap; even color, no cracking visible in photos, light wear only"
    ],
    "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: bright gold-tone circular rings, adjustable buckle, and swivel lobster-style clips; no visible engraving.",
        "leather_description": "photo 1: smooth pink leather-looking material with finished edges; exact material is not verifiable.",
        "lining_description": "not_visible",
        "strap_construction": "photo 2: narrow adjustable strap with buckle holes, keeper loops, folded and stitched attachment ends, and detachable swivel clips at both ends.",
        "stitching_description": "photo 1: generally straight, fairly even tonal stitching along the strap edges and folded tabs."
    },
    "ensemble_agreement": "MEDIUM",
    "ensemble_variance": 0.0135,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.02,
                "coach_probability": 0.28,
                "vintage_probability": 0.08,
                "authenticity_confidence": 0.18,
                "image_quality_score": 0.88,
                "seller_misidentification_probability": 0.72,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [
                    "photo 1: pink leather-looking adjustable strap with gold-tone swivel lobster clips and generally neat edge stitching could be compatible with a modern replacement handbag strap.",
                    "photo 2: adjustable buckle construction and strap length are consistent with a detachable accessory strap, but not specifically Coach."
                ],
                "negative_evidence": [
                    "photo 1: the item is a strap only, not a handbag.",
                    "photo 1: no legible COACH wordmark, horse-and-carriage, creed, serial, or other Coach identifier is visible.",
                    "photo 1: hardware appears bright, polished, and modern rather than the heavier aged solid-brass hardware typical of vintage Coach.",
                    "photo 5: the large swivel clips and rings are generic-looking and provide no brand-specific evidence.",
                    "photo 6: the strap appears machine-stitched and finished, but the construction is common among many modern accessory brands."
                ],
                "missing_information": [
                    "photo 1-6: no close-up of any reverse side, end tab, or hidden stamp where a brand mark might appear.",
                    "photo 1-6: no original bag or provenance is shown.",
                    "photo 1-6: material composition is not verifiable from photos; the strap may be leather, bonded leather, or synthetic leather.",
                    "photo 1-6: seller-stated length is not independently measured."
                ],
                "authenticity_concerns": [
                    "photo 1: the bright modern hardware and generic strap construction do not support attribution to vintage Coach.",
                    "photo 1: seller's statement that it matches Coach is not corroborated by any visible Coach identifier."
                ],
                "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 circular rings, adjustable buckle, and swivel lobster-style clips; no visible engraving.",
                    "leather_description": "photo 1: smooth pink leather-looking material with finished edges; exact material is not verifiable.",
                    "lining_description": "not_visible",
                    "strap_construction": "photo 2: narrow adjustable strap with buckle holes, keeper loops, folded and stitched attachment ends, and detachable swivel clips at both ends.",
                    "stitching_description": "photo 1: generally straight, fairly even tonal stitching along the strap edges and folded tabs."
                },
                "possible_model_reasoning": [
                    "This is an accessory strap rather than a handbag, so no Coach handbag model can be assigned.",
                    "The visible construction is more consistent with a modern generic replacement strap than a documented vintage Coach component; no era-specific identifier is visible.",
                    "Condition appears Good to Very Good from photos: light handling\/use is visible, but no obvious major cracking, tears, or broken hardware; unseen reverse wear and function remain unknown."
                ],
                "confidence": 0.82,
                "recommended_max_bid": 8,
                "estimated_resale_low": 8,
                "estimated_resale_high": 25
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [
                    "photo 1-6: strap-only listing with no creed, wordmark, or hardware stamps visible to verify Coach manufacture",
                    "no Coach identifier present on detachable part alone; replacement straps are rarely marked"
                ],
                "authenticity_confidence": 0.12,
                "coach_probability": 0.15,
                "confidence": 0.7,
                "estimated_era": "unknown",
                "estimated_resale_high": 20,
                "estimated_resale_low": 5,
                "image_quality_score": 0.75,
                "is_handbag_probability": 0.02,
                "missing_information": [
                    "no handbag present to assess - only detachable strap shown",
                    "close-up of any stamps on dogleash clips or buckle not shown",
                    "no creed \/ wordmark \/ hangtag can be checked because no bag included",
                    "leather edge and backside markings not shown"
                ],
                "negative_evidence": [
                    "photo 1-6: object is a detachable shoulder strap only, not a handbag",
                    "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch, or hangtag visible",
                    "photo 1,5: dogleash clips unmarked in photos; vintage Coach brass clips typically unmarked but modern Coach hardware is engraved",
                    "photo 1-6: smooth pink leather with dark painted edges, not vintage unlined glove-tanned cowhide"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "gold-tone dogleash swivel clips with round O-rings both ends plus gold-tone buckle for adjustment; no engraving legible in photos",
                    "leather_description": "smooth bubble-gum pink leather with dark brown painted edges, even tone",
                    "lining_description": "not_visible",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "tone-matched straight edge stitching along strap edges, visible in photo 1 and 5",
                    "strap_construction": "adjustable detachable shoulder strap with buckle adjustment, seller states 32 in to 38 in, dogleash clips both ends",
                    "turnlock_present": false
                },
                "positive_evidence": [
                    "photo 1,5: large dogleash swivel clips with O-rings consistent in type with Coach detachable straps",
                    "photo 2,3,4: buckle-adjustable leather strap construction similar to modern Coach crossbody straps",
                    "seller text states matches Coach based on online pics (weak untrusted evidence)"
                ],
                "possible_model_reasoning": [
                    "no handbag present so no Coach model can be matched; strap alone cannot be tied to Willis (9927), Court (9870), Station (5130) or other dogleash-strap models",
                    "bubble-gum pink with gold-tone hardware suggests modern (2000s+) replacement \/ accessory strap if Coach, not vintage glove-tanned era",
                    "Condition: Good to Very Good as strap; even color, no cracking visible in photos, light wear only"
                ],
                "possible_models": [],
                "recommended_max_bid": 8,
                "seller_misidentification_probability": 0.15,
                "vintage_probability": 0.08
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 17733,
            "output_tokens": 783,
            "total_tokens": 18516,
            "estimated_cost_usd": 0.008972
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 18068,
            "output_tokens": 1352,
            "total_tokens": 19420,
            "estimated_cost_usd": 0.004695
        }
    ]
}