NOS - I think it's a Regatta 23 but don't believe we have the ad on-site. I'm basing it on the looks of the Regatta's and of course the clam shell display case it came to me in. All Stainless New Old Stock (you didn't think I ran out of NOS's did you?). Kestenmade half expansion band is very likely original to the watch. Hand tag is mark 01351 but has no other markings, not sure if it's a Bulova catalog number. The textured dial is very cool.
Added 1/25/2013 - Photos Update 10/3/2022
Is the box not original...kinda suggests that it is a Regatta 23 if so.
Regatta advert states '.....features: pearl-finish luminous dial, rich raised time markers, 23 jewels at all points of wear......" + "...self-winding! Shock-resistant! Waterproof!"
Seems to be a match.
If original to the watch then Regatta 23, otherwise could be a Bulova 23.
Tentative Regatta 23 is my call.
In reply to Is the box not by mybulova_admin