Vintage 1964 JAPAN SEIKO SPORTSMATIC5 DX 7606-7991 23Jewels Automatic.
It’s a SEIKO Automatic Watch,SPORTSMATIC5 DX 7606-7991 23Jewels. The Revolutionary Dedicated Calendar Quick-Set Push-Button: One of the most famous, historically significant engineering traits of the Caliber 7606 is its independent calendar push-button beautifully integrated near the 1 o’clock position .
