Fixing Crystal Of A Kienzle Markant

[Oldwatchlover1979]

Hi! 

I have a 1960's Kienzle Markant wrist watch with broken acrylic crystal. Does any body know what is the size of its crystal?

[Ishima]

You have to use a combination of judgement, a vernier gauge, and a little trial and error, even experience professionals often order in more than one glass for any given replacement.
I'd be very impressed if anyone knew offhand the right size crystal for this watch. 

Do you have a crystal lift?

Also it does not look broken to me, worn and scratched, unless the crystal is loose? but polywatch and cotton could fix most cosmetic wear to acrylic crystals. 

Edited April 22, 2015 by Ishima

[Geo]

Welcome the forum. Looking at the pictures of your watch, the crystal only looks scratched. If this is the case, you can remove the scratches with 800 then 1000 grit wet or dry paper used by car paint finishers. Once you have rubbed out the scratches, finish off the job with a good quality metal polish such as Solvol Autosol.

Do not rush the job and take great care not to rub the case with the abrasive paper during in the process.

[Oldwatchlover1979]

Thanks for comments. By the way these pictures are old and before the crystal got broken. I just wanted to show you the exact type of the watch. I have already bought a 27.8 mm crystal but I am not sure that's the correct one or not. So I wonder 27.6 mm or 27.8 mm fits.

 

[Geo]

Ah I see your problem.

Using vernier callipers measure the diameter of the broken one. Order two new ones, one the same size or 0.01mm larger, and also order the next incremental size up. One of them will fit, but you will need to have a crystal lift to compress the new crystal to allow it to enter the case.