Hi Ginger,
I think a plain crystal is the original... IMO there were very few models with cyclops (if any).
kind regards
Erich
if you sent it for service to your local man he would be able to get a correct crystal easily enough.
G
After seeing the magnificent Memomatic posted by zitrual below, I decided to hold out either for something mint or a real bargain. I have been successful in hunting and trapping lately, and don't need to purchase anything not quite right.
I do have an original cyclops crystal on my 1959 Seamaster calendar, date at 3, but that is the only Omega example of which I have personal knowledge.
Ginger....