1) Dial
-Is Exactly what color should the dial be with appropriate patina? Should it be grey on the inner ring and brown in the sub-dials?
Andy K: In my experience, the dials don't all age the same or get the same patina. The one pictured looks correct for either a well-preserved original or a service replacement.
-Should there be tritium lume dots at the 3,6,9 position like the ones on either side of the Omega logo?
Andy K: No.This was doesn't.
-Should the large second hand, and the sub-dails at 3 and 6 both be orange hands or yellow or was this variable by year?
Andy K: The standard was orange, but yellow was an option available to pilots. Yellow was supposedly more visible in cockpit lighting. Sellers tend to try to charge more for yellow hands as a result.
-Do Omega service dials have "T-Swiss-T"? I'm basically trying to figure out if the dial is original or not. Gut says no.
Andy K: I have wondered myself but I my guess is older service dials had "T Swiss Made T", while I'm certain modern service dials just say "Swiss Made" and use luminova. I'm certain of this because ofrei.com sells the non-tritium versions still. So yours is at least an older service dial or an original.
2) Pushers
-Most of the color has gone off the pushers. If I purchase this watch, should I replace them? If replaced with other vintage sets, will value be maintained?
Andy K: Can't comment, I'd wait for someone wiser than me to chime in here.
3) Overall
-How many years where they produced? I've heard '69-73 but also heard until mid-late 70s.
Andy K - 69-73 sounds right but they may have had stock selling for a few years after that.
-Is the AM/PM (I think 910?) version any more or less valuable?
Andy K: I think collectors may give a slight edge to the 910 for being earlier and for having more color. I prefer 911 for the running seconds hand which makes it a bit more practical as a regular wearer.
Is the Cal. 910/911 movement better/worse, cheaper/more expensive to service, etc.
Andy K: I don't know, I'd be curious to see a watchmaker chime in!
I've searched online and ebay for prices and they seem a bit all over the place.
Andy K: Agreed! Prices are all over the place. I can't really tell from the pics but it looks like the line between the sunburst finish and the case sides is not that sharp, likely from past polishings, but that could just be a blurry pic. It all depends on condition and what you value: do you need all-original or can you live with appropriate service/replacements? As @M.D. mentioned, dealers seem to always ask 50% to 100% more than they tend to sell for on the forums and at auction. Click to expand...