Gruen Quadron 157 Crystal

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Gruen Quadron 157 Crystal

#1 Post by slinfiniti » Sun Apr 09, 2017 12:38 pm

I am searching for a crystal for my recently acquired Quadron. The crystal that came with the watch has to be the wrong one.

Please see pics below

I have tired to measure as accurately as possible. Quadron owners know about the unusual crystal installation. There is a metal frame that the crystal rest on, the frame then goes in the in the watch.
Frame Crystal Out Updated.jpg
Frame Crystal Out Updated.jpg (64.29 KiB) Viewed 87 times
The crystal that came with the watch has a slight curvature to it. I think I need more of a flat one
Side Profile.jpg
Side Profile.jpg (35.61 KiB) Viewed 87 times
As you can see it is curved, this does do work with this crystal design. I would appreciate your help.

Inside Case Back.JPG
Inside Case Back.JPG (72.2 KiB) Viewed 87 times
I have attached a picture of the inside case stamps for reference

3 Pieces.JPG
3 Pieces.JPG (57.66 KiB) Viewed 87 times
This is the set up, Bezel, frame and crystal
Frame and Crystal.JPG
Frame and Crystal.JPG (50.38 KiB) Viewed 87 times
This is a picture of the crystal resting on the bezel

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