For sale due to collection reorganization. This is a 1970 December production 56KS King Seiko with a blue Roman numeral dial. The Roman numeral dial is rare for KS, and the slightly rounded square cushion case has a unique charm and is lovely. There are minor scratches on the crystal and case, but no major damage. There are slight stains on the dial. The medallion is also in beautiful condition. Winding and hand-setting operations are smooth. For the sale, I have replaced the strap with an unused generic deployant buckle strap. The strap is a bonus. I acquired it last year after an overhaul, but the timing and history are unknown. It is currently running normally. Approximate daily rate on a flat surface: ±30 seconds. This is an antique watch from over 50 years ago. Please purchase only if you understand the accuracy and other characteristics of vintage watches. Production year: December 1970 Model: 5621-7000 Movement: Automatic (with manual winding) Frequency: 28,800 bph (8 vibrations) Seconds hand stop function Lug width: 19mm King Seiko Antique Vintage 56KING SEIKO 56 King Seiko King Seiko 56