Unreleased, One-of-a-Kind Prototype (Fixed Price) This item is a prototype (sample) created in the late 1980s for internal testing. It was never sold to the general public and is an unreleased model that was not included in any catalogs. After researching domestic and international markets from the 1990s to 2025 (eBay, Grailed, Japanese auction markets, and overseas dealer records), there is no record of an identical item ever being sold. This is an archive piece, potentially the only one of its kind in the world. Please provide your feedback after appraisal. There were no certificates for prototypes at the time. The authenticity is determined based on the materials, sewing, construction, "Made in Taiwan" markings, and market history. Instant purchase is OK.