Thank you for viewing. Silhouette: The 551ZXX is characterized by a slightly deep rise and a tapered silhouette towards the hem. Its balanced silhouette, neither too wide nor too narrow, is popular among vintage enthusiasts. Rarity: The 551ZXX was only produced for a short period of five years, from 1961 to 1966, making it a rare model in the vintage market. Relationship with 505: The 551ZXX is considered the predecessor to the 505, and its production ended with the introduction of the 505. Details: The 551ZXX features copper-brown buttons instead of a leather patch, as well as hidden rivets and V-stitching. The 551ZXX is a popular model among vintage jeans, notable for its technical feature of pre-shrunk denim and its historical significance as a precursor to the 505. [Special Offer] ★ Follow Discount We offer discounts based on the product price for those who follow us. Please let us know by commenting "I followed!" in the comment section before purchasing. Under ¥2,999 → ¥100 OFF Under ¥3,000 → ¥200 OFF Under ¥7,000 → ¥300 OFF Under ¥10,000 → ¥500 OFF Of course, this applies to those who already follow us, so please let us know from the comment section! ★ Bundle Discount We offer further discounts for bulk purchases, so please let us know in the comment section!