My Speedmaster gets a lot of scratches due to the 'glass' actually being plasticy plexiglass kind of stuff. I usually get the marks polished out every other month or so at a good jewellers (Michael Jones in Northampton) Sometimes they do if for nowt sometimes £5, guess it depends what kind of mood the assistants in!

I've never had any scratches on my other watches with Sapphire crystal glass though which is good.