Celebrating my own "Certina-DS week" with the last of the breed (I think). When I bought a DS-3 Automatic with the in-house 919-1 caliber I thought that it was the last in line, until this came up: DS-4 Automatic. Same caliber, more slender case. Mostly you will find Quartz movements in a DS-4, but there are two alternatives. The first one today, and the second tomorrow, from then on it's "old school" DS.
First wruw post. New daily beater came. Waiting for my speedy to come back from Steve so I can show that off next.