So this is going to be an interesting one for me.
I took a chance on this watch and bought it on eBay. It fits the ad for a Lady Maxim to a T, with identical filigree on the bezel and on the watch face. It also has what appears to be an original band that is too small for a modern wrist. If the watch is legit, no adult is ever going to wear it because I don't have it in me to cut that band off.
The seller said she bought the box seperately but thought it might be correct for the period.
The movement looks totally legitimate to me. The date code is hard to see but its between the "sixteen jewel" marking near the stem and the screw to the right of that. I can provide a close up if needed.
Both of the full ads for this watch are 1922 and both claim 15 jewels. However, there are a number of examples in the database with 17 jewels so I assume that's variable. None have the 10AA movement but that appears to be variable as well and the date range is correct.
What's really bothersome about this watch are the markings on the inside of the case back. Its not marked "Bulova" or "American Standard" as should usually be the case and as every other example I can find is. Instead its marked "Guilfora 25 years". It's a little hard to read because its in script and it could be "Guilford" but I really can't find any indication that there's an upstroke on that last letter. Perhaps you guys can make it out better. In any case, it defintiely seems to me to be unusual.
Legitimate Lady Maxim or non-conforming, I'll be interested to hear your opinions. Thanks.