Vintage Coach Hunter

{
    "is_handbag_probability": 0.99,
    "coach_probability": 0.025,
    "vintage_probability": 0.05,
    "authenticity_confidence": 0.025,
    "image_quality_score": 0.765,
    "seller_misidentification_probability": 0.03,
    "confidence": 0.865,
    "recommended_max_bid": 15,
    "estimated_resale_low": 17.5,
    "estimated_resale_high": 47.5,
    "possible_models": [],
    "positive_evidence": [
        "photo 1: Leather crossbody handbag with a saddle-style flap and stitched construction is clearly visible.",
        "photo 2: Brown leather and brass-tone hardware are visible, but these are generic features shared by many makers.",
        "photo 1-3: brown leather shoulder\/crossbody handbag with brass-tone hardware"
    ],
    "negative_evidence": [
        "photo 1: No COACH wordmark, horse-and-carriage, creed patch, or recognizable Coach hangtag is visible.",
        "photo 2: The front closure is a generic strap-and-buckle arrangement rather than a recognizable vintage Coach turnlock.",
        "photo 3: The rear zipper and construction appear generic; no Coach-marked zipper pull or other identifier is visible.",
        "photo 4: The bag has a contemporary handmade\/artisan saddle-bag design and visible product watermarking, not a clearly documented vintage Coach construction.",
        "seller listing: Seller identifies it as handmade goat leather and unbranded; this is weak text evidence but consistent with the visible non-Coach design.",
        "photo 2: buckle-tab flap closure, not Coach turnlock geometry",
        "photo 2-3: contrast tan stitching around flap and pocket, not tone-matched Coach stitching",
        "photo 4: green fabric visible at top opening, not unlined suede-back glove-tanned interior of vintage classics",
        "photo 3: exterior back zip pocket with small zip pull, not Coach classic layout of interior zip + slip under flap",
        "photo 1-4: no creed patch, no COACH wordmark, no horse-and-carriage, no leather hangtag visible",
        "photo 1-4: rounded saddle silhouette with front snap pocket and roller-buckle tab does not match any catalog Coach style"
    ],
    "missing_information": [
        "photo 1-4: Interior is not shown fully or emptied, so any label, creed, or fabric tag cannot be checked.",
        "photo 1-4: No close-up of hardware markings, zipper pull, strap attachments, or maker's stamp is provided.",
        "photo 1-4: Exact dimensions, country of manufacture, and approximate purchase date are not provided.",
        "photo 4: interior main compartment not emptied\/shown - lining material and any interior patch\/tags not visible",
        "photo 1-4: no creed patch view - request straight-on interior back-wall\/pocket photo",
        "photo 2: no hardware close-up of buckle\/clasp engravings"
    ],
    "authenticity_concerns": [
        "photo 1-4: No Coach-specific identifier is visible, and the silhouette alone is insufficient to attribute the bag to Coach.",
        "photo 1-4: Generic saddle construction and hardware are consistent with an unbranded handmade bag rather than a vintage Coach model."
    ],
    "possible_model_reasoning": [
        "photo 1-4: No Coach model is a plausible ranked match because the bag lacks Coach identifiers and its generic saddle silhouette is widely produced by handmade leather makers.",
        "photo 1-4: The product photography, watermark, and seller's handmade-goat-leather description suggest a modern artisan bag rather than a documented vintage Coach item.",
        "photo 1-4: Condition appears Good to Very Good visually, with creasing and surface variation but no obvious major tear; interior, odor, and strap condition are not fully assessable.",
        "No Coach model fits: buckle closure vs turnlock, contrast stitching, goat leather, fabric lining and back zip layout are inconsistent with City Bag, Court, Station, Dinky or other classics",
        "Condition: Like New \/ new handmade appearance; leather uniform with sheen, no corner wear visible (photo 1-3), but bottom and interior not shown so grade capped"
    ],
    "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, 2 and 4: Brass-tone buckles and strap hardware are visible; no Coach engraving is visible. The closure uses a leather strap with a buckle\/snap-style fitting, not a recognizable Coach turnlock.",
        "leather_description": "photo 1-4: Smooth, dark brown leather with visible creasing, tonal variation, and saddle-bag styling; seller states goat leather, which is not independently verifiable from the photos.",
        "lining_description": "photo 4: A green textile-like material is visible at the top opening, but the full lining and interior condition are not shown.",
        "strap_construction": "photo 1 and 3: Long narrow adjustable leather shoulder strap is visible, with buckle adjustment and side attachment points.",
        "stitching_description": "photo 2 and 4: Visible contrast brown stitching appears generally even around the flap and pocket edges; construction is artisan-style and not diagnostic of Coach."
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0019,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.99,
                "coach_probability": 0.03,
                "vintage_probability": 0.05,
                "authenticity_confidence": 0.03,
                "image_quality_score": 0.88,
                "seller_misidentification_probability": 0.04,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [
                    "photo 1: Leather crossbody handbag with a saddle-style flap and stitched construction is clearly visible.",
                    "photo 2: Brown leather and brass-tone hardware are visible, but these are generic features shared by many makers."
                ],
                "negative_evidence": [
                    "photo 1: No COACH wordmark, horse-and-carriage, creed patch, or recognizable Coach hangtag is visible.",
                    "photo 2: The front closure is a generic strap-and-buckle arrangement rather than a recognizable vintage Coach turnlock.",
                    "photo 3: The rear zipper and construction appear generic; no Coach-marked zipper pull or other identifier is visible.",
                    "photo 4: The bag has a contemporary handmade\/artisan saddle-bag design and visible product watermarking, not a clearly documented vintage Coach construction.",
                    "seller listing: Seller identifies it as handmade goat leather and unbranded; this is weak text evidence but consistent with the visible non-Coach design."
                ],
                "missing_information": [
                    "photo 1-4: Interior is not shown fully or emptied, so any label, creed, or fabric tag cannot be checked.",
                    "photo 1-4: No close-up of hardware markings, zipper pull, strap attachments, or maker's stamp is provided.",
                    "photo 1-4: Exact dimensions, country of manufacture, and approximate purchase date are not provided."
                ],
                "authenticity_concerns": [
                    "photo 1-4: No Coach-specific identifier is visible, and the silhouette alone is insufficient to attribute the bag to Coach.",
                    "photo 1-4: Generic saddle construction and hardware are consistent with an unbranded handmade bag rather than a vintage Coach model."
                ],
                "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, 2 and 4: Brass-tone buckles and strap hardware are visible; no Coach engraving is visible. The closure uses a leather strap with a buckle\/snap-style fitting, not a recognizable Coach turnlock.",
                    "leather_description": "photo 1-4: Smooth, dark brown leather with visible creasing, tonal variation, and saddle-bag styling; seller states goat leather, which is not independently verifiable from the photos.",
                    "lining_description": "photo 4: A green textile-like material is visible at the top opening, but the full lining and interior condition are not shown.",
                    "strap_construction": "photo 1 and 3: Long narrow adjustable leather shoulder strap is visible, with buckle adjustment and side attachment points.",
                    "stitching_description": "photo 2 and 4: Visible contrast brown stitching appears generally even around the flap and pocket edges; construction is artisan-style and not diagnostic of Coach."
                },
                "possible_model_reasoning": [
                    "photo 1-4: No Coach model is a plausible ranked match because the bag lacks Coach identifiers and its generic saddle silhouette is widely produced by handmade leather makers.",
                    "photo 1-4: The product photography, watermark, and seller's handmade-goat-leather description suggest a modern artisan bag rather than a documented vintage Coach item.",
                    "photo 1-4: Condition appears Good to Very Good visually, with creasing and surface variation but no obvious major tear; interior, odor, and strap condition are not fully assessable."
                ],
                "confidence": 0.88,
                "recommended_max_bid": 15,
                "estimated_resale_low": 20,
                "estimated_resale_high": 60
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [],
                "authenticity_confidence": 0.02,
                "coach_probability": 0.02,
                "confidence": 0.85,
                "estimated_era": "modern (2000s+), non-Coach",
                "estimated_resale_high": 35,
                "estimated_resale_low": 15,
                "image_quality_score": 0.65,
                "is_handbag_probability": 0.99,
                "missing_information": [
                    "photo 4: interior main compartment not emptied\/shown - lining material and any interior patch\/tags not visible",
                    "photo 1-4: no creed patch view - request straight-on interior back-wall\/pocket photo",
                    "photo 2: no hardware close-up of buckle\/clasp engravings"
                ],
                "negative_evidence": [
                    "photo 2: buckle-tab flap closure, not Coach turnlock geometry",
                    "photo 2-3: contrast tan stitching around flap and pocket, not tone-matched Coach stitching",
                    "photo 4: green fabric visible at top opening, not unlined suede-back glove-tanned interior of vintage classics",
                    "photo 3: exterior back zip pocket with small zip pull, not Coach classic layout of interior zip + slip under flap",
                    "photo 1-4: no creed patch, no COACH wordmark, no horse-and-carriage, no leather hangtag visible",
                    "photo 1-4: rounded saddle silhouette with front snap pocket and roller-buckle tab does not match any catalog Coach style"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "brass-tone roller buckle on front tab and small clasp\/snap on front pocket (photo 2, photo 4); back zipper with brass-tone pull (photo 3); no COACH stamping visible",
                    "leather_description": "dark brown smooth leather with mottled patina, seller states goat leather; not glove-tanned cowhide appearance (photo 1-4)",
                    "lining_description": "not_visible except photo 4 shows green fabric at top opening, suggests fabric-lined construction",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "visible contrast light-tan stitching around flap edge, front pocket and body perimeter (photo 2-4)",
                    "strap_construction": "thin flat brown leather crossbody strap, buckle-adjustable (photo 1)",
                    "turnlock_present": false
                },
                "positive_evidence": [
                    "photo 1-3: brown leather shoulder\/crossbody handbag with brass-tone hardware"
                ],
                "possible_model_reasoning": [
                    "No Coach model fits: buckle closure vs turnlock, contrast stitching, goat leather, fabric lining and back zip layout are inconsistent with City Bag, Court, Station, Dinky or other classics",
                    "Condition: Like New \/ new handmade appearance; leather uniform with sheen, no corner wear visible (photo 1-3), but bottom and interior not shown so grade capped"
                ],
                "possible_models": [],
                "recommended_max_bid": 15,
                "seller_misidentification_probability": 0.02,
                "vintage_probability": 0.05
            }
        }
    ],
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            "output_tokens": 936,
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        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
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}