Brand: Seiko Model: Tank Reference: 5Y31-5A30 Serial Number: 040199 Country of Origin: Japan Movement: Seiko Quartz (Cal. 5Y31) Crystal: Mineral crystal Case Size: 27 × 25 mm Case Material: Gold-plated base metal Case Back: Stainless steel Strap: Black leather strap with gold-tone buckle Functions: Hours and minutes This Seiko Tank 5Y31-5A30 is an elegant vintage wristwatch inspired by classic rectangular dress watch design. The refined gold-tone rectangular case, minimalist gold dial, and slim baton hour markers create a timeless and understated aesthetic. Its balanced proportions make it suitable for both formal wear and everyday elegance. The watch is in excellent, fully cleaned condition and in perfect working order. The quartz movement runs accurately and reliably. Cosmetic condition is very well preserved for its age, with only minimal signs of wear visible in the photos. The watch is offered with its original Seiko box, which significantly enhances its collectible and presentation value. A tasteful and timeless piece, ideal for collectors of vintage Seiko quartz watches or classic rectangular dress watches. The item will be carefully packed and securely shipped.