Research Forum

Description

Forum topics that relate to individual models or groups that require additional research and discussion by the community.

  • Parts
  • Cases
  • Movements

Early 1920s Bulova watch dating

Submitted by mybulova_admin on
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Research Forum

I'd like to officially put this forward to the myBulova.com community at large to scrutinize and see if it holds true. We've always had a problem dating the very early 1920s vintage Bulova wstches  and often used the first number in the case serial number to date the year of production.

Well I'd like to suggest that for pre 1924 watches (pre movement date code) we use the second number to date the year of production.

Can someone help me identify the appropriate crystal for this N7 watch?

Submitted by jdp11 on
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Research Forum

I'm looking for a replacement crystal for my N7 Automatic watch. I took it to two watchmakers and they were unable to find it. The issue seems to be that this is a curved crystal.  Please let me know what other information you need to help me determine the correct crystal. 

Back plate - 8169
Movement - 1133.10 n7

Explanation of the movement numbers

Submitted by Stinky_Sullivan on
Forum topics
Research Forum

I did a little research and figured out what each letter of the Bulova movement numbers mean. This may be written down somewhere but I’ve never seen it.

This applies to mechanical movements only.

After the first 2 letters, every letter after that has a specific meaning.

A = Automatic
B = Day-Date
C = Sweep seconds
D = Calender (date)
F = No seconds hand
L = No seconds hand
H = Hack
R = Alarm
S = Glycidur balance
U = Jump Hour

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