I'm posting the scans of the 16-size Zenith Prima here, since it seems to be the appropriate place.

This watch probably should be in a Fortune or Empress case, but at the moment it is residing in a 25 year Crescent swing ring case. The case I got the watch in was worn out and had multiple screw marks in it, so nothing was destroyed in fitting it into another case.

Ed Ueberall
NAWCC 49688
IHC Member 34
The Escapement


First image is the 16-size Zenith Prima movement...

Ed Ueberall
NAWCC 49688
IHC Member 34
"The Escapement"

This second image shows the Zenith dial and hands...