Seiko King 5621-7021

Seiko King "56KS" King Seiko

Basic Info Listing code : QPTCH2 Brand : Seiko Model : King Reference number : (Vintage) Dealer product code : 2511-4913 Movement : Automatic Case material : Steel Bracelet material : Leather Year of production : 1972 Condition : Used (Good) Most Recent Servicing : February 11, 2026 Scope of delivery : No original box, no original papers Gender : Men's watch/Unisex Location : Japan, Setagaya-ku,Tokyo Price : 100,000 Availability : Item is in stock Caliber Movement : Automatic Caliber/movement : 5621 Number of jewels : 25 Case Case material : Steel Case diameter : 36 x 41.5 mm Thickness : 10 mm Water resistance : Not water resistant Bezel material : Steel Crystal : Glass Dial : Silver Dial numerals : Lines Bracelet/strap Bracelet material : Leather Bracelet color : Black Bracelet length : 200 mm (80 mm / 120 mm) Lug width : 80 mm Clasp : Buckle Clasp material : Steel Buckle width : 120 mm Other Central seconds, Vintage 【Item description】 This is a SEIKO King Seiko featuring the 56-series movement manufactured at the Suwa factory, commonly known as "56KS." It is powered by the non-date Cal. 5621, one of the 56-series high-beat movements developed in the late 1960s, operating at 28,800 bph. The 56-series was also used in Grand Seiko models, combining a slim profile with high precision. It was a key movement that supported Japan's high-grade mechanical watches of the period. The case shows Seiko's sharp and disciplined styling. Unlike the one-piece cases often found in 56KS models of the period, this watch features a screw-back case. 【Condition】 Overall, the watch remains in good condition. The dial is in good condition. The case shows minor scratches from use. The glass has been replaced with a part matching the original shape. The crown is an original part with the “KS” logo. The attached HIRSCH strap is new. Maintenance was carried out in 2026. The accuracy was measured in the dial-up position with the watch fully wound. 【Guarantee】 All vintage watches come with a 6 month warranty from the date of purchase.However, damage to the parts is not covered by the warranty.This vintage watch is maintenanced by our repair workshop and the accuracy is adjusted within ±0~30 seconds/day in tester value. 【Shipping】 Items will be shipped by DHL within 3 days if we are working days. ※Ships only to the address registered with Chrono24.