I accidentally dropped my watch. The original crystal got some serious cracks. Can someone help me which crystal should i order at ebay? My watch is a constellation 751. Thanks!
Ouch! With a shock like that, the crystal may be the least of the damage. Best to pull the crown and stop it running until you get it to a competent watchmaker for an assessment.
If you're taking it to a watchmaker, they will open it and get the reference number for the case. Then he/she can look up the crystal that goes with that case, buy it and fit it for you. This is the safest way as you are not at risk of buying the wrong crystal. We don't usually buy parts from eBay as you don't know what you're getting a lot of the time. I don't usually accept parts from customers either just in case they are faulty. Good luck, Chris