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I’m servicing and repairing a 17-jewel vintage Tissot Seastar from the 60s (cal. 781), and I need an armoured acrylic crystal replacement. I guess it should be easy to order a generic replacement, but I’ve never ordered a generic crystal before, so I’d appreciate some assistance please.

As I wish to save on the shipping, I’m going to shop the crystal from Cousinsuk.com as I’m also ordering a balance staff replacement for this watch, plus some other items.

Reading page 3 in this “Sternkreuz Armoured Glasses PDF document” on Cousins’ site I think I need either an “ATG/C” or an “ATGH/CH” (high dome) glass depending on the height of the dome, but that’s just my guess and that’s why I’d appreciate your assistance.

I should mention that it was quite easy to pop out the old crystal. A light pressure with the thumb was all that was needed.

Hopefully, the following pictures and measurements will facilitate determining what I need to order. If you need more pictures, measurements, or have any questions, please let me know!

TissotCrystalMeasurements.thumb.jpg.54e72a54dd6f02b43b468000c9555510.jpg

TissotCrystalMeasurements2.thumb.jpg.23251954aac905cec941a84dd3dd1843.jpg

TissotCrystalMeasurements3.thumb.jpg.faa7fa9277a39d6f702d753be5583dea.jpg

TissotCrystalMeasurements4.thumb.jpg.0ebca4760a2c125200d47ce2c79fb2ff.jpg

TissotCrystalMeasurements5.thumb.jpg.55d6d56b131df2e716f52692f0d0152c.jpg

TissotCrystalMeasurements6.thumb.jpg.b5196ecd51361a500f9ad41a64b46f28.jpg

Edited by VWatchie
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