I have always been interested in vintage watches, but never had the chance to become a "collector". Recently my dad gave me a good start by giving me his old Constellation...I believe it is Ref. 168.004
He has no documentations for this watch. I don't think it has been serviced for the last 15 years, at least. And as you can see the crystal is pretty scratched up. However, it still keeps good time. While I would never consider selling it, I don't want to do anything to diminish its value. So, here are some of my questions which I hope you experienced Omega owners could shed some light on for me:
1)How do I find out more about the watch, for example, the date of manufacturer, etc. Would Omega give me the info if I send them the serial #?
2)Looks like there is a couple of significant scratches (cracks?) on the crystal at the 4 and 6 o'clock positions. Should I replace the crystal or would it hurt the value?
3)Alternatively can the crystal be polished?
4)I believe this is an 18K gold case, but it looks a bit tarnished, should I polish the case?
5)Where can I get any of these done? I live in the San Francisco Bay Area, I don't think there is an Omega Service Center around here.
Thanks in advance.