Thank you for viewing. This is a pre-owned item. It is currently working without any problems. Please check the condition of the exterior in the photos. Model: Grand Seiko 61GS Reference Number: 6145-8000 (with day-date function) Year of Manufacture: Around 1967-1968 Movement: Equipped with Cal.6146A (automatic winding), achieving a high beat of 10 vibrations per second (36,000 vibrations/hour). Features: This is an early model without the "HI-BEAT 36000" inscription at the 6 o'clock position on the dial. The silver dial is combined with bar indexes and bar hands with a black line in the center. A Grand Seiko medallion is embedded on the back cover. This model is still highly popular today as a domestic antique watch due to its high accuracy and beautiful design.