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ITProDad

Eterna 1429u crystals

Question

One more question about wrist watches. Specifically the Eterna 1429u I’m working on.

 

I usually work on pocket watches and have collected a sizable collection of NOS replacement lenses. But I don’t know anything about wrist watch crystals. The one I’m trying to replace measures 31.5mm diameter by 4.5mm high. The bottom that fits the frame of the watch measures exactly 13 and 15/16 lignes.

 

I checked Cousins. However, I don’t know the difference between domed, curved, flat bottom etc. Would anyone be willing to educate me a bit on wrist watch lenses/crystals?

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Sent from my iPad using Tapatalk

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