This watch appears to be a 1937 model based on the "arrow" symbol on the movement. There are no other date codes on the movement or case. The 10K Rolled Gold Plate/Gold Filled watch case has a corner cut shape (square with cut corners (CornerCut shape). Case back has the serial number 7145351 and is marked B-10K ROLLED GOLD PLATE. The watch has gold pencil hands and the dial has alternating gold arabic numerals and stick indices. The 17 jewel movement grade/caliber appears to be 7AM (inside a rectangle). I looked through the 1930s watches here but could not find a match. The Case measures 18.7mm wide not including crown. The lug width is 9.5mm and the lug to lug measurement is 24.8mm.
In reply to It looks like a Nightingale… by Kathy L.
It does appear to match the Nightingale in that ad photo. The only puzzling thing is that it appears the Nightingale is marketed as a nurse's watch and the seconds hand would be necessary for this purpose. As you mentioned, it appears to be missing the seconds hand, but on close inspection I don't see any means of attachement for a seconds hand on the post where the other hands are mounted. I'm not an expert on this but just curious. Interestingly, it seems like the Nightingale didn't have much design continuity over the years.
In reply to It does appear to match the… by poor_mans_tahiti
Definitely matches a Nightingale case. I also do not see a center second pinion to attach the second hand. The dial and case look to match so I don't think it is a frankenwatch. That being said the dial of the Adele which has a similar case but different lugs is a match to this watch. I could not find a match to case and dial. Unknown.
In reply to The 7AM movement is not… by 1955mercury
I have a couple of American Nurses that have 7AM with seconds hand https://mybulova.com/watches/1941-american-nurse-1419 and https://mybulova.com/watches/1943-american-nurse-9224 and a Clara Barton https://mybulova.com/watches/1939-unknown-9468 and this Unknown https://mybulova.com/watches/1939-unknown-9431
In reply to I have a couple of American… by Kathy L.
I've seen the photos of your watch's movements Kathy. I can't explain why they are stamped as 7AM. The "C" in a movement model means it has a center seconds hand. The center wheel and pinion for a movement with a seconds hand is Bulova part #3 and Bulova didn't make a part #3 for the 7AM movement. The gear train bridge for a 7AM is not machined to accept the extra parts needed for a center seconds wheel. The sweep seconds intermediary wheel for a sweep seconds hand is part #91 and Bulova didn't make that part for a 7AM movement. The sweep seconds pinion is part #92. That part is not made for a 7AM movement either. I don't have an explantion for why the movements in your watches are stamped 7AM.
In reply to I've seen the photos of your… by 1955mercury