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Reverend Rob's picture
Reverend Rob
Panel Member
Posted September 25, 2018 - 1:18am

Although the bridge shapes are different, this is based on the FHF Robert ebauche. 

Posted July 26, 2015 - 4:59pm

I don't know if this helps but I have an older case filled with stems(Bulove genuine standardized stems)and on the cover there's a interchangeabilty guide.One line lists the 9AN as being interchangeable with:9AT-10A-10AA-10AB-10AE-10AEcs-10AM-10AN-10ANcs-10AR-10AX-10AXcs movements.I don't have a 9AN stem or else I would offer it to you for free.Also I don't know if the stems listed are all interchangeable.Hope this helps. 

William Smith's picture
William Smith
Club 5000Panel Member
Posted July 25, 2015 - 10:13pm

1924 10AA 16J  Asterisk below SWISS to left of crown and 110632 SN

Posted June 25, 2012 - 7:03pm

Anyone know compatible Stems for this model, The keyless work has a different yoke and set lever than 10 AE's and 10AN's.  HELP!!!




FifthAvenueRestorations's picture
Posted October 10, 2011 - 10:21pm

William Smith's picture
William Smith
Club 5000Panel Member
Posted January 4, 2013 - 11:24am

The above 10AA has no date symbol, and is housed in a case with a tentative production date. It also has a movement serial number. The watch record has been dated based on first digit of case serial number, but we see many, if not most of these 1919-1923 cases having serial numbers beginning with a 1.  This date/period is partially backed up by a couple tentative ads for the 155 model (I think 1922 ads).  Based on the movement signature of Bulova Watch Co. this movement is, in my opinion, 1923 at the earliest- more likely 1924.