1974 Seiko Steel Tank 1520-3630 - Manual Wind

This 1974 Seiko Steel Tank (Ref. 1520-3630) is a sleek and refined vintage piece, capturing the clean, architectural lines that made rectangular watches so distinctive in the 1970s. Its stainless steel case gives it a modern, understated presence while staying true to classic tank-inspired design.

The dial is crisp and well balanced, offering excellent legibility with minimalist styling that complements the sharp case geometry. The rectangular profile sits comfortably on the wrist, delivering both elegance and subtle statement appeal.

Powered by Seiko’s reliable Caliber 1520 manual-wind movement, this watch provides smooth mechanical operation and dependable performance. Stylish, collectible, and unmistakably mid-’70s, it’s a fantastic choice for collectors seeking a vintage Seiko with strong design character and everyday wearability.