Vintage Seiko 5 Sports Automatic – Black Dial, 23 Jewels, Day-Date – Japan Made, Ref. 5126-6100 This is a vintage Seiko 5 Sports automatic watch from Japan, featuring the highly sought-after reference 5126-6100. With its bold black dial and iconic cushion-shaped stainless steel case, this timepiece captures the unmistakable spirit of Japanese watchmaking from the late 1960s to early 1970s. The dial displays "SPORTS / WATER 70 PROOF / 23 JEWELS" along with the distinctive Seiko 5 logo, a red seconds hand, and applied baton hour markers that retain their original warm patina. The day-date window at 3 o'clock adds both functionality and classic style. Powered by the reliable Seiko caliber 5126 automatic movement with 23 jewels, this watch winds itself through the natural motion of the wrist — no battery required. The stainless steel bracelet is original and matches the era of the watch. This watch has been recently cleaned and is currently running. The case back is engraved with "SEIKO / STAINLESS STEEL / 5126-6100 / WATERPROOF," confirming its authenticity and provenance directly from Japan. Unique Piece: The Seiko 5 Sports 5126-6100 is a beloved vintage model among collectors worldwide. Its combination of the rugged cushion case, vivid black dial, and dependable automatic movement makes it a true icon of 1970s Japanese watchmaking heritage. Condition: As a vintage timepiece of approximately 50 years, this watch shows natural signs of age consistent with its history. The crystal shows light scratches, and the case and bracelet bear minor wear marks commensurate with its vintage status. These marks are testament to its authenticity and the decades it has lived through. The dial and hands are well-preserved, and the movement is running. Please note: Since the item will be shipped from Japan, customs duties and import taxes may apply upon arrival in your country. According to Catawiki's policies, any customs duties and import taxes are the responsibility of the buyer. Specifications: Brand: Seiko Model: Seiko 5 Sports Reference: 5126-6100 Movement: Automatic (self-winding), Caliber 5126 Jewels: 23 Functions: Hours, Minutes, Seconds, Day, Date Dial: Black Case material: Stainless steel Bracelet: Stainless steel (original) Country of origin: Japan Tags: Seiko 5 Sports, vintage Seiko, automatic watch, 5126-6100, Japanese vintage watch, Seiko automatic, black dial, day date, cushion case, 23 jewels, retro watch, Seiko Japan, 1970s watch, collectible watch, vintage automatic