fxcooker

What size gasket do i need?

My 1997 model year datejust stopped working yesterday and I took it to my local watch repair guy (not authorized rolex repair/dealer) and he said it needs cleaned. I've never had it serviced and I bought it used and i doubt its ever been cleaned. So anyways, I left it with him to get cleaned, but now I'm thinking I may want him to replace the crystal because it has some nicks that annoy me. So I call him back and ask him about replacing the crystal and he says he cant get parts but says he'll replace it for free with the cleaning if i can find the part. I see there are replacements on eBay for like $20 - $30 but I wonder if I will notice a difference in the quality from the original. Does anyone have any experience with generic replacement crystals? I can't seem to find genuine ones for sale anywhere... http://www.ebay.com/...=item25661886b1 http://www.ebay.com/...=item4600ec41c0