Alex
Posted February 8, 2017 - 8:57am
Dear dougindoors57, your watch is the 156 and was later called the Minerva, although we only have one ad confirming that of 19 December 1924 from a jeweler called R.L. Reese in the Corsicana Daily Sun. The case of your watch with a serial number starting with 12 is from around 1923, while the movement with the square date code is from 1927 and thus probably a replacement. This happens more often. Since the movement is a replacement, I would classify your watch according to the date of the case, being 1923 and therefore call the watch: 156.