Bulova 1931 Bertram

5/10 votes
Model ID rating explained.
Manufacture Year: 
Movement Model: 
Movement Jewels: 
Movement Serial No.: 
Case Serial No.: 
Case shape: 
Case Manufacturer: 
Crystal Details: 
15.6mm by 21.4mm measured in case
Additional Information: 

Nothing on outside case back except "OPEN"
Inside case back: Bulova Quality Pat. Jan. 11 1927  1127945
Single hinge case w/ dust cover intact.
Movement 21 Jewel 6 adjustments  Bulova Watch Co. 
Dial stamped Swiss
Bracelet:  Hallmarked "Sternite"
Case Deminsions:  26.7mm (not counting crown) by 36.4mm lug tip to tip
Crystal: 15.6mm by 21.4mm measured in case at bezel/crystal edge

First digit of case serial number used to determine production date.

Edited 2012.08.26

Not For Sale
Bulova watch
1931 Bulova watch
1931 Bulova watch
1931 Bulova watch
1931 Bulova watch
FifthAvenueRestorations's picture
Posted July 8, 2012 - 10:17am

Posted July 8, 2012 - 10:41am

Closest to the Conrad. Case shape and jewel count are there. Not right hands for Conrad and I am unable to see the engraving on the advert well enough to say yes. If I were on the panel I would have to give a tenative for a Conrad but I am not on the panel so My best guess is a Conrad with newer hands until I see better advert.

Very nice watch regardless of what you choose to call it.

John JP

vintagebulova.com's picture
Posted July 8, 2012 - 11:52am

Club 5000

Not Conrad.  Might work out better for testing if we had some easy ones.  This is one of those that will probably remain unknown.  



William Smith's picture
William Smith
Posted July 8, 2012 - 2:48pm

Club 5000Panel Member

Yea Jay I didn't think about that until after posting.

Posted July 8, 2012 - 2:53pm

so can we post comments or what..it just the forum gone..someone please explain..

William Smith's picture
William Smith
Posted July 8, 2012 - 3:01pm

Club 5000Panel Member

Hi Dave  I see your comment.  These mechanics are being worked on/out.  Don't know what it will be like after some tweaks, but it looks like any registered member can comment, while "guests" to the site- those who have not created an account, user name and login can only view w/o commenting.

William Smith's picture
William Smith
Posted July 8, 2012 - 2:58pm

Club 5000Panel Member


Without an ad, another example, or other info, I can only use "style" to guess about a redial or dial swap, since I don't have a clue which dial(s) may have come on this watch originally. 

I'd like to see a couple more pictures of the watch, since this is a new user who entered it.  Maybe there is something on the case back besides the word "OPEN". This won't necessarily help w/ ID, but would be nice to have with this record.  So if I/we have a request for more info, and the owner isn't following the post, should I make the request here AND PM him saying we have a question about his watch? 

William Smith's picture
William Smith
Posted July 11, 2012 - 3:21am

Club 5000Panel Member

Since this is "my" watch, I'm not voting on model ID.  Is that correct?  I'm not sure if we should follow this protocol, but if that's the method, that's fine w/ me. I realize if the owner is not a panel member, then they wouldn't vote on ID (although any suggestions from them would be considered by those who do vote).  Many of the watches are listed by owners who are also voting panel members. I guess the "owner" not voting for ID on his "own" watch may somehow cut down on a real or perceived conflict of interest, but with only 9 panel members, I'm not sure that the potential conflict of interest outweighs the benefit of the owner voting for their own watch?  
Confused yet?   :)

Posted July 8, 2012 - 3:14pm

thank you will

Posted July 8, 2012 - 6:50pm

Here's another shot of the outside case back.  I double-checked and the only thing on the back is "OPEN".