10BZAC

Start Year
1959
End Year
1964
Jewels
23, 30
simpletreasures
Posted November 24, 2011 - 9:49pm

Added to data base 11/24/2011 year is estimated as of this date. Could be mid 50's.

William Smith
Posted May 19, 2012 - 1:37am

Looking for pre 1959 example. None in our database. Rantff remarks "1959 to 1963" at http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&Bulova_10BZAC.  NOVA also lists start date as 1950, but her two 23 Jewel examples are from 1959  (Beau Brumme)l and 1963 (Regatta).  I think the 1950 estimate is too early. 

Edited to start date of 1959 w/ this caveat.  End date changed from blank to 1963.

Bezalel
Posted March 14, 2014 - 2:34pm

I have a 23 Jewel 10BZAC movement with an "M4" date code.

Andersok
Posted February 1, 2015 - 11:18am

1961 (M1) - 23 Jewels