Vintage Watch Casio WS-80 Alarm Chronograph Solar Battery - Etsy
The Casio Vintage Club | Casio Casiotron 01-501(01), release date 1974 November, this is the debut model, the beginning of Casio wrist watches, the very first model | Facebook
04-507 RARE CASIO Casiotron 1974 Digital LCD Quartz watch uhr MOT $195.00 - PicClick
Something different, a very early Casio from 1975. | UK Watch Forum