The Crown Watch, released in 1956, features the Seiko Marvel movement, which was hailed as a "magnificent watch." At the time, this model symbolized Seiko's global expansion and marked a significant milestone in the history of Japanese watchmaking. Product Overview: The movement is confirmed to be stiff. Crown maintenance is required to maintain stable operation. Manufacturer: Seiko Crown Strap: Newly replaced Shape: Round Accessories: None Year of Manufacture: 1960s Movement: Manual winding Remarks: Diashock 19-jewel movement There may be scratches and discoloration, but please understand this as the unique texture resulting from aging and the distinctive character of this vintage watch. Please note that the actual color may differ slightly from the images due to lighting during photography and display settings.