Hello again... guys thanks for all the advise, the watch is with this guy, 拢200 but promised to clean the whole watch and he might have a new crystal lying around somewhere...
Other question, does anybody know, who sells dials NOS, or otherwise? A friend saw my watch and realised, his father has got one in a drawer, battered but with a fine movement, and asked me, if I knew, who is selling new dials for them. I said, somebody might do a repainting job, but he wanted the genuine thing (since the watch comes to him free of charge). I had a look on ofrei, cousins, ebay, forums, google, nothing seemed to have resulted in anything. Is it just me, or nobody is selling them anymore?
Thank you again,
Gabriel