While in watchmaking school we worked on a handful of “common” calibers. Our main repertoire included:

Unitas 6497
Rolex 1570
ETA 2824
ETA 2892
Valjoux 7750
ETA 955.xxx
ETA 926.xxx
Lemania 1873

We also got limited exposure to some other modern movements and were responsible for providing other watches in an effort to increase our exposure to different calibers while we had constant [...]