I just got this in the mail from a seller in Japan today, and I was excited to share. This is an open face Accutron pocket watch in steel. I found an ad from a late 60's early 70's Swiss catalog with an 18k solid gold example pictured with a description under it stating a "same model in steel" with the model number being 21 396. Interestingly enough I also found a listing from Christie's auction house selling the solid gold example in 2020 for CHF 1,375.
They list the case number as 723. The steel model as a case number of 723-1. I also thought that Bulova putting the case serial and date code on the bottom of the case and not the back was a nice touch. It keeps the back looking clean. Case back and the 2181 movement have an M9 date code.
In reply to Perhaps a new model name … by mybulova_admin