Serviced, 1977 Seiko Superior quartz watch in pristine condition. A model launched in 1976, which set a new standard of precision at ±1 second a month. The battery life was extended to more than two years. The oscillating frequency was 32,768 Hz. This was the most expensive Seiko in 1977. It cost 180,000 yen. By comparison, most expensive Grand Quartz was only 100,000. Disassembled and thoroughly cleaned. HSS case is sharp and edgy with no noticeable scratches or dings, except for a few very small nicks on the left side. Beautiful 3D dial has onyx on hour markers and applied minute markers. Very detailed, delicate and expensive looking. It is clean, with no noticeable flaws. Original Sapphire crystal is scratch free. Bracelet is in good condition. Full size, easily adjusted. SKU# S2045 Model 4883-8100 Movement Quartz Caliber 4883B Jewels 7 Case HSS hardened stainless steel Case size 36mm x 41.5mm x 10mm Lugs 18mm Dial white Crystal Sapphire Bracelet stainless steel XBB110 Serial # 700676 Service July 23, 2026