Seiko LCD crystal - glass ?

[james_stan]

Hi All

I have a nice A259-5019 model seiko which has a few light scratches on the crystal that i would like to polish out . I think it's glass. xan anyone confirm this /

If so is Jewellers rouge the best polishing compound ?

Cheers

James

[Old Tom]

All the early Seikos have glass crystals (unless someone has cut a plastic replacement). They used different types of glass on different models and while some are "soft" and comparatively easy to grind & polish any with "Hardlex" crystals are a lot more work. Grinding/polishing glass is an art- check out some of the amateur telescope mirror making sites for a step by step guide to doing this.

[james_stan]

Hi Tom

Thanks. It may sound daft but the crystal looks soft. The scratches are no harsh as I've seen before (eg on my 70's Tissot seastar tick-tock).

I just read a post on another watch forum where a guy used various grades of wet and dry up to 2000 then cerium oxide powder (whatever that is) in a paste fo a final polish..

Cheers

James