- Jul 20, 2018
Nice specimen.Here is a Swiss made Standard watch made for the North American RR market, a 19 jewel Zenith Prima 16 size movement that would have been accepted by any North American railroad that allowed Swiss (or German) watches that met the railroad's time service requirements. Zernith also made 21 jewel (Superior grade) and 23 jewel (Extra grade) versions. These were made in both 16 and 18 size examples.
These were very well made and expensive movements and not many were made.
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It's interesting that the Canadian Pacific Railroad allowed use of the 18s Prima whether with 17j or 19j however the 16s Prima was bypassed. The only 16s Zeniths accepted by the CPR were the Extra in 23j & the Superior with 21j/23j. In due course the 16s 21j Extra RR-56 was allowed (recall that that movement was created at the behest of a CPR head office watch inspector).
Go figure ...