...as the GUB 60 series was in production from 1952 to 1961. The "1Q" versions of the movements were produced beginning in 1954 and made up about a third of total 60 series production. I believe Dirk kept the wheel train from the GUB 60.x movements and produced most of the rest himself. "50% new, 50% old" is how I remember him putting it.
Dirk also used the GUB 60 ebauche in an earlier, very limited series of 25 watches dubbed the 03.0 "Mini". This was a 33 mm diameter ladies' model (the 29.4 mm movement is shoehorned in!) with the classic silver Dornblueth deck watch dial. Roger G. has written about the 03.0 on his Dornblueth blog.
(As you can tell, I love talking about this!)
cheers,
Tom