Vintage Coach Hunter

{
    "is_handbag_probability": 0.98,
    "coach_probability": 0.18,
    "vintage_probability": 0.46,
    "authenticity_confidence": 0.16,
    "image_quality_score": 0.86,
    "seller_misidentification_probability": 0.2,
    "estimated_era": "unknown",
    "possible_models": [],
    "positive_evidence": [
        "photo 1: leather crossbody handbag with a vintage-style flap silhouette and brass-tone strap hardware",
        "photo 3: hardware appears substantial and aged rather than obviously plastic",
        "photo 6: seller provides a ruler and the bag appears to be approximately 11\u201312 inches wide"
    ],
    "negative_evidence": [
        "photo 1: no visible COACH wordmark, horse-and-carriage, creed patch, or hangtag",
        "photos 1\u20136: the bag uses large rounded rectangular buckle hardware and strap grommets, not a recognizable Coach turnlock or documented Coach closure",
        "photos 1\u20136: the exterior leather has a glossy, heavily finished appearance that is not strongly characteristic of vintage unlined glove-tanned Coach leather",
        "photos 1\u20136: exterior-only views do not show the interior construction or any brand identifiers"
    ],
    "missing_information": [
        "photo request: straight-on close-up of the complete interior, especially the back wall and any leather creed patch",
        "photo request: interior pocket and seam areas for a fabric tag or serial\/style tag",
        "photo request: close-ups of the inside of the flap, zipper, and any closure hardware",
        "photo request: bottom, corners, and full strap attachment details",
        "seller-stated dimensions, country of manufacture, and whether the interior is leather, suede, or fabric"
    ],
    "authenticity_concerns": [
        "The visible design is compatible with a generic vintage leather saddle\/courier bag but does not provide Coach-specific evidence.",
        "The seller's vintage and solid-brass claims are unverified by the photos and cannot substitute for a creed or other 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 and photos 3\u20135: brass-tone rounded rectangular buckle hardware, strap grommets, and rivet-like fittings are visible; no Coach engraving is visible",
        "leather_description": "photos 1\u20132 and 5: black leather-like material with fine grain, surface sheen, creasing, and light edge wear; exact leather type is not determinable",
        "lining_description": "not_visible",
        "strap_construction": "photos 1 and 5: adjustable-looking leather strap with multiple grommet holes and buckle-style attachments at both sides",
        "stitching_description": "photos 1\u20132 and 5: perimeter stitching is generally even and visible around the flap and body; interior and stress-point stitching are not shown"
    },
    "possible_model_reasoning": [
        "The flap-and-strap silhouette could loosely resemble a vintage saddle or courier bag, but no specific Coach catalog model can be established from the exterior photos.",
        "The lack of a visible turnlock makes common classic candidates such as Court, Willis, Station, City Bag, or Dinky poor matches.",
        "Era cannot be reliably assigned because no creed, serial, country line, lining, zipper, or Coach label is visible.",
        "Condition: approximately Good to Very Good from the visible exterior; leather shows creasing and surface wear, while corners and interior are not fully assessed."
    ],
    "confidence": 0.72,
    "recommended_max_bid": 18,
    "estimated_resale_low": 15,
    "estimated_resale_high": 45,
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 25541,
            "output_tokens": 980,
            "total_tokens": 26521,
            "estimated_cost_usd": 0.012568
        }
    ]
}