Hi all! This is my first foray into the world of antique wrist watches (I'm a pocket watch guy). I just received this Deco-era Westfield. All I know about it is that it's likely made by Bulova, who I think started in 1911, and they registered the Westfield name in 1917. I'm guessing the date to be around 1925-1935. It's housed in a 10K RGP case, SN 7640241, which I think would mean it's from either 1927 or 1937, but I'm not sure. I've also read that the lack of a SN on the movement would post-date the movement after 1932, and that the lack of a code on inside of the the case would pre-date 1950, so 1937 looks like it may be a pretty good guess, however, after looking a a few dozen advertisements from that era, I've also found that the case engraving more closely resembles the style of the late-20s than it does the late-30s. I've read on the board that Bulova used the Westfield name for lesser-quality movements. As you can see by the photo this one's an unadjusted (assumed due to the lack of an adjustment designation on the movement) 17-jewel 10 AW. The balance is bimetallic, but it's not split. It's been running spot-on accurate for the past 30+ hours on its initial wind. I've checked the movement and trademark databases on mybulova, watchophilia, Mikrolisk, and elsewhere, and I haven't found anything referring to the 10 AW or to Westfield (except for the mention of a 1917 trademark registry on Mikrolisk). I've also noticed that the codes don't correspond with any kind of congruency whatsoever (for example, 10 ATs were made in the 30s, 10 AUs were made in 1950, and 10 AXs were made in the 40s) Is the 'W' of the 'AW' for Westfield, maybe? I know it seems like a lot of work for a seemingly unimportant movement, but any information anyone can give would be greatly appreciated. Thanks in advance for your help!