Recently, on another forum, someone asked about this pocket watch, claimed to come from his grandfather:
A watchmaker/collector then showed a similar item:
Note the identical serial numbers on the calibers (847129)… "Norwich" is not a known watch manufacturer. In fact, the only list where I found this name lists the casemaker "The Sun Watch" with a similar logo to a Swiss watch Co. named, according to that list, as "Nowitch": Goering; Händler f¨r Uhengehäuse; registriert in Österreich am 3.2.1909; La Chaux-de-Fonds, Schweiz.
Note also the three-armed, uncut balance, the poor finish and assembly of the bridges, and the small number of stones (I can see only the balance stone)…
I believe this is an example of the "Fake" Swiss imports from the beginning of the XX Century, as discussed in Complete Price Guide to Watches, Engle T, Gilbert RE, Shugart C; No 29: 2009; p.97, and here, and on this forum. I may be all wrong…
1. Are there examples of legitimate three-armed vintage balance wheels?
2. Does the presence of screws (other than the timing quarter screws or nuts) on a vintage balance-wheel always mean that it's temperature-compensated, and should therefore always be full-cut?
I am not an expert, and I would very much appreciate any comments or more information about this pocket watch.