Introduction: The 2577
The Crown(s)
For once, a feature Omega did not change multiple time during the 7-year production. There’s exactly one correct style for the reference, at that is the famous “clover”-style crown.
Of course, many were replaced during services in the meantime, and only the examples with the flat feet Omega logo are truly period correct. Personally, I wouldn’t push a good 2577 with a service crown out of bed: Replacements are relatively easy to find.
(Clockwise from top left: top view on the clover crown; the period-correct standard example; a modern service item; a rather uncommon “Naiad”-example)