Bulova 1956 Cavalier

For all purposes, appears to be a "Regency" model in dial, hands, and case. However, it has a 10BPAC 23-jewel movement where the Regency is advertised as a 17-jewel. Not original strap. L6 date code. No markings other than a recent service mark and a faint stamped BULOVA inside the case back. Case back exterior markings - BULOVA | 14KT GOLD | SHOCK RESISTANT | B511908 L6 | ANTI-MAGNETIC | SELF WINDING | * WATER PROOF *.  No serial# or date code on movement itself. Yellow gold case. Signed crown. Unknown if this was "Frankenwatched" with a Regency case/dial and a movement out of a "23". There are no Regencies in the MyBulova database to compare to.