Nice condition flightmaster. The problem with the engraving is provenance in my opinion. It could have been engraved at anytime, more probably since MC passed away, but it also could have been done by him as a gift for crew members.
We have to be cynical without having any provenance to back up the second theory.
For example did he always sign 'MC' ?
I would have expected something a bit more personal as an inscription like ' from Michael, Westworld 1973 '.
This inscription would need a lot more research before i would consider it genuine.
Still a great watch though
G