1998, USA-made, Valencia factory 501XX early reproduction model. Waist: 88, Inseam: 90, Hem width: 21 (↓ Judgment criteria listed) ① Patch Labeling → 501XX Reproduction • Leather patch style (paper patch) with "501xx" notation • Current 501s do not have "xx" • Original 50's had older leather quality and printing → Matches the characteristics of the reproduction line ② Wash tag: White tag, MADE IN U.S.A. → Characteristics of the 90s-00s • White quality tag • "MADE IN U.S.A." • WPL423 notation also fits the era → Good to judge as a genuine American-made reproduction ③ Button back stamp "524" → Made in Valencia factory (correct) • 524 is the factory number of the Valencia factory, which produced many "reproduction masterpieces" • Valencia-made is particularly popular and highly valued ④ Denim fading and sewing also follow the reproduction specifications The vertical fading is not very pronounced, so the texture is that of a reproduction, not an original from that time. Other features... • Chain stitch • No red ear (overlock) • Double stitch Made in '98, and the button back "524", the quality tag format, the patch type, and the red tab "Levi's®" are all perfectly consistent. This is not an original (from the 1950s), but a highly complete "90's reproduction" made as a reproduction of it. Valencia-made is highly regarded now, and is among the top in popularity among reproductions. Used market price: 13,000~22,000 This is just my personal judgment, so I will correct it if there are any mistakes!! I apologize for listing it without proper research.