Mechanical WW Which stem for this AS 1950/51

Charlie Ryan

NAWCC Member
Dec 10, 2017
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4
18
58
Annapolis, MD
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Hi All

I'm a beginner trying to revive this AS 1950/51 in a Baylor diver style. Cleaning and rebuild went better than expected and looks good on timegrapher.

The stem has broken off in the crown as shown

IMG_4193.JPG

I see this at Borel website which I'm not used too using. Should I assume this is the same stem?
jb 2.jpg
As for crown, Esslinger sells them with these specs "Btl # / MM / Ht / Post / Tap". How do I translate that into what I need?

Any help is appreciated!

Thank you

Charlie
 

roughbarked

Registered User
Dec 2, 2016
7,711
1,484
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Western NSW or just this side of the black stump.
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Region
As 1800 to 1950 are basically the same watch. Stem W3086.

As for the crown you will need the size of the pipe on the case that the crown fits on, the diameter of the crown, the height or thickness of the crown, the length of the threaded post in the crown that screws onto the stem and the thickness of the thread on the stem.
You could buy thread extension and a new crown or you could also try eating out the broken stem in the crown by soaking it in warmed alum solution.
Essentially you don't need a new stem as a thread extension will solve the problem. Order a 0.9mm to 0.9mm stem extender.
 

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