Seiko Sonola transistor clock.

Donations gratefully received to keep this channel going: https://www.paypal.me/TommyWylie The first transistorised clocks were pendulum controlled like this one. Also made at this time was the Kundo ATO style mantel clock. The ATO MAT double balance wheel clocks came out slightly later and of course ruled the market for about 15 years until quartz clocks came along and finally killed off all ingenuity and appeal.