Can we resurrect this? It wasn't really resolved. I originally, incorrectly, listed an 8AE mvmt. I later noted in this string that it is actually a 7AP, which was verified by Rev Bob from the photo. However it was never updated in the description. Rev Bob noted that there no other examples of a 7AP, making the ID problematic.
The database contains only 5 other '42 Senators. 4 are 8AE and one is 8AC. Not a huge sample. I have noticed that my case serial # starts with 22 and all of the others are 25 or higher. Of the other 5, the 8AC is in the watch with the next higher case serial number.
If higher serial numbers correspond to later dates (assumption on my part), is it not reasonable that the earlier SN Senators might have used the 7AP and the "8" series movements were employed later in the year? Case and mvmt both date to 1942. Case and dial match others in the database. What's missing besides a predecessor?