Origins of the Seikomatic: A 30 jewel Seikomatic 15031D from January 1963 | Adventures in Amateur Watch Fettling
Origins of the Seikomatic: A 30 jewel Seikomatic 15031D from January 1963 | Adventures in Amateur Watch Fettling,Seikomatic 30 jewels automatic Cal.603 15031DE / case no. 2014230 , made in Japan.,Birthday Watch February 1960! Seiko Cal 603 J15031D Seikomatic JDM 30J Gold-Filled Automatic Watch (OH)