Vintage Coach Hunter

{
    "is_handbag_probability": 0.975,
    "coach_probability": 0.03,
    "vintage_probability": 0.475,
    "authenticity_confidence": 0.03,
    "image_quality_score": 0.665,
    "seller_misidentification_probability": 0.035,
    "confidence": 0.765,
    "recommended_max_bid": 13.5,
    "estimated_resale_low": 17.5,
    "estimated_resale_high": 47.5,
    "possible_models": [],
    "positive_evidence": [
        "photo 1: leather shoulder-bag silhouette and adjustable long strap are consistent with a handbag.",
        "photo 1: substantial brown leather is visible.",
        "photo 4: a suede-like leather interior and interior pocket are visible.",
        "photo 4: unlined suede interior is seen on vintage Coach classics, but here paired with non-Coach laced construction and fabric tag so non-specific",
        "photo 1-3: all-leather shoulder bag with patina in brown tones superficially resembles vintage leather bags, but no Coach-specific details"
    ],
    "negative_evidence": [
        "photo 1: elaborate exposed lacing, large decorative rivet-like studs, and a broad western-style leather construction do not match typical vintage Coach classic construction.",
        "photo 2: the front closure is a decorative strap-and-buckle arrangement rather than a recognizable Coach turnlock.",
        "photo 4: no recognizable Coach creed, wordmark, horse-and-carriage, or readable serial\/style number is visible.",
        "photo 1: the exterior has prominent decorative construction and uneven surface finishing unlike the restrained, clean construction typical of classic Coach bags.",
        "listing text: the seller describes it as handmade leather and does not provide a Coach attribution; this is weak contextual evidence only.",
        "photo 1, photo 2, photo 3: exposed dark leather lacing \/ whipstitch around flap, sides and bottom - construction never used on vintage Coach classics",
        "photo 2: front flap closure is ornate dark antiqued metal clasp, not Coach turnlock geometry with oval back plate and slim tab",
        "photo 4: no Coach creed patch visible on suede interior; only small black fabric tag with light symbols, inconsistent with Coach leather creed",
        "photo 1-4: no COACH wordmark, horse-and-carriage, or leather hangtag visible on exterior, interior or hardware",
        "photo 4: silver-tone snap on strap tab with mixed dark hardware tone, inconsistent with vintage Coach solid brass throughout"
    ],
    "missing_information": [
        "Straight-on close-up of every interior wall and pocket to confirm whether any hidden brand or creed patch exists.",
        "Close-up of the small interior black mark\/stamp in photo 4; it is not legible enough to identify.",
        "Clear photos of the underside, all corners, strap attachments, and hardware.",
        "Readable photos of any zipper pull, buckle, or maker stamp.",
        "Seller-stated country of manufacture and approximate age, if known.",
        "photo 4 interior label close-up needed to identify maker - small black tag with symbols not legible",
        "no creed patch shown - request straight-on interior back wall and pocket views",
        "no hardware stamp close-ups, but no Coach identifiers visible"
    ],
    "authenticity_concerns": [
        "The visible construction is more consistent with a handmade or western\/leather artisan bag than a Coach product.",
        "No Coach identifier is visible in the provided photos; silhouette alone is insufficient for Coach attribution.",
        "The decorative lacing and stud hardware are inconsistent with the usual construction of the vintage Coach models considered here."
    ],
    "possible_model_reasoning": [
        "No Coach model is a reasonable match because the closure, lacing, stud treatment, and overall handmade western styling do not correspond closely to the listed Coach catalog silhouettes.",
        "Condition: Good; visible surface scratches, marks, creasing, and wear on the leather and interior (photos 1, 3, and 4). Bottom and full interior condition are incompletely shown.",
        "No Coach model fits: laced whipstitch construction, ornate clasp, and black fabric symbol tag do not match any catalog style (City Bag 9790, Willis 9927, Court 9870, Station 5130, etc.)",
        "Era reasoning: handmade \/ boho laced construction suggests 1970s-style or later revival handmade bag, but no Coach creed, serial, country line, or hardware to date as Coach; therefore non-Coach",
        "Condition: Good; seller notes marks scratches on lining and exterior, photos show patina, scuffs, darkened areas and wear consistent with use, strap intact, no tears visible"
    ],
    "estimated_era": "unknown",
    "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: dark metal\/brass-tone decorative studs and strap hardware are visible; no Coach engraving is legible. photo 3: an adjustable buckle is visible.",
        "leather_description": "photo 1: brown, visibly textured and distressed leather with surface scratches and tonal variation. It appears substantial, but the photos do not establish Coach glove-tanned cowhide.",
        "lining_description": "photo 4: suede-like tan interior with a pocket is visible; marks and wear are present. No recognizable Coach lining label is visible.",
        "strap_construction": "photos 1 and 3: wide adjustable leather shoulder strap with a buckle; strap shows creasing and wear.",
        "stitching_description": "photos 1-3: prominent dark leather lacing\/stitch-like detailing around the edges and seams; construction appears decorative and handmade rather than typical Coach machine stitching."
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0027,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.98,
                "coach_probability": 0.03,
                "vintage_probability": 0.55,
                "authenticity_confidence": 0.03,
                "image_quality_score": 0.78,
                "seller_misidentification_probability": 0.04,
                "estimated_era": "unknown",
                "possible_models": [],
                "positive_evidence": [
                    "photo 1: leather shoulder-bag silhouette and adjustable long strap are consistent with a handbag.",
                    "photo 1: substantial brown leather is visible.",
                    "photo 4: a suede-like leather interior and interior pocket are visible."
                ],
                "negative_evidence": [
                    "photo 1: elaborate exposed lacing, large decorative rivet-like studs, and a broad western-style leather construction do not match typical vintage Coach classic construction.",
                    "photo 2: the front closure is a decorative strap-and-buckle arrangement rather than a recognizable Coach turnlock.",
                    "photo 4: no recognizable Coach creed, wordmark, horse-and-carriage, or readable serial\/style number is visible.",
                    "photo 1: the exterior has prominent decorative construction and uneven surface finishing unlike the restrained, clean construction typical of classic Coach bags.",
                    "listing text: the seller describes it as handmade leather and does not provide a Coach attribution; this is weak contextual evidence only."
                ],
                "missing_information": [
                    "Straight-on close-up of every interior wall and pocket to confirm whether any hidden brand or creed patch exists.",
                    "Close-up of the small interior black mark\/stamp in photo 4; it is not legible enough to identify.",
                    "Clear photos of the underside, all corners, strap attachments, and hardware.",
                    "Readable photos of any zipper pull, buckle, or maker stamp.",
                    "Seller-stated country of manufacture and approximate age, if known."
                ],
                "authenticity_concerns": [
                    "The visible construction is more consistent with a handmade or western\/leather artisan bag than a Coach product.",
                    "No Coach identifier is visible in the provided photos; silhouette alone is insufficient for Coach attribution.",
                    "The decorative lacing and stud hardware are inconsistent with the usual construction of the vintage Coach models considered here."
                ],
                "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: dark metal\/brass-tone decorative studs and strap hardware are visible; no Coach engraving is legible. photo 3: an adjustable buckle is visible.",
                    "leather_description": "photo 1: brown, visibly textured and distressed leather with surface scratches and tonal variation. It appears substantial, but the photos do not establish Coach glove-tanned cowhide.",
                    "lining_description": "photo 4: suede-like tan interior with a pocket is visible; marks and wear are present. No recognizable Coach lining label is visible.",
                    "strap_construction": "photos 1 and 3: wide adjustable leather shoulder strap with a buckle; strap shows creasing and wear.",
                    "stitching_description": "photos 1-3: prominent dark leather lacing\/stitch-like detailing around the edges and seams; construction appears decorative and handmade rather than typical Coach machine stitching."
                },
                "possible_model_reasoning": [
                    "No Coach model is a reasonable match because the closure, lacing, stud treatment, and overall handmade western styling do not correspond closely to the listed Coach catalog silhouettes.",
                    "Condition: Good; visible surface scratches, marks, creasing, and wear on the leather and interior (photos 1, 3, and 4). Bottom and full interior condition are incompletely shown."
                ],
                "confidence": 0.78,
                "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": 0.03,
                "coach_probability": 0.03,
                "confidence": 0.75,
                "estimated_era": "modern (2000s+), non-Coach",
                "estimated_resale_high": 35,
                "estimated_resale_low": 15,
                "image_quality_score": 0.55,
                "is_handbag_probability": 0.97,
                "missing_information": [
                    "photo 4 interior label close-up needed to identify maker - small black tag with symbols not legible",
                    "no creed patch shown - request straight-on interior back wall and pocket views",
                    "no hardware stamp close-ups, but no Coach identifiers visible"
                ],
                "negative_evidence": [
                    "photo 1, photo 2, photo 3: exposed dark leather lacing \/ whipstitch around flap, sides and bottom - construction never used on vintage Coach classics",
                    "photo 2: front flap closure is ornate dark antiqued metal clasp, not Coach turnlock geometry with oval back plate and slim tab",
                    "photo 4: no Coach creed patch visible on suede interior; only small black fabric tag with light symbols, inconsistent with Coach leather creed",
                    "photo 1-4: no COACH wordmark, horse-and-carriage, or leather hangtag visible on exterior, interior or hardware",
                    "photo 4: silver-tone snap on strap tab with mixed dark hardware tone, inconsistent with vintage Coach solid brass throughout"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "dark antiqued metal flap clasp (photo 2), brass-tone adjustable strap buckle (photo 3), silver-tone snap on interior tab (photo 4); mixed tones, not solid vintage Coach brass",
                    "leather_description": "medium to rich brown distressed smooth leather with patina, scratches and marks; laced edges; not Coach glove-tanned finish with matched stitching",
                    "lining_description": "unlined suede-back interior in tan-brown visible in photo 4, with dark edge trim",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "no conventional stitching visible; exposed dark brown leather lacing \/ whipstitch joining panels around perimeter",
                    "strap_construction": "long flat leather shoulder strap, adjustable with buckle, same brown leather, attached at sides",
                    "turnlock_present": false
                },
                "positive_evidence": [
                    "photo 4: unlined suede interior is seen on vintage Coach classics, but here paired with non-Coach laced construction and fabric tag so non-specific",
                    "photo 1-3: all-leather shoulder bag with patina in brown tones superficially resembles vintage leather bags, but no Coach-specific details"
                ],
                "possible_model_reasoning": [
                    "No Coach model fits: laced whipstitch construction, ornate clasp, and black fabric symbol tag do not match any catalog style (City Bag 9790, Willis 9927, Court 9870, Station 5130, etc.)",
                    "Era reasoning: handmade \/ boho laced construction suggests 1970s-style or later revival handmade bag, but no Coach creed, serial, country line, or hardware to date as Coach; therefore non-Coach",
                    "Condition: Good; seller notes marks scratches on lining and exterior, photos show patina, scuffs, darkened areas and wear consistent with use, strap intact, no tears visible"
                ],
                "possible_models": [],
                "recommended_max_bid": 12,
                "seller_misidentification_probability": 0.03,
                "vintage_probability": 0.4
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 16882,
            "output_tokens": 962,
            "total_tokens": 17844,
            "estimated_cost_usd": 0.009062
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 17202,
            "output_tokens": 1534,
            "total_tokens": 18736,
            "estimated_cost_usd": 0.004668
        }
    ]
}