amanico[JLC Moderator]
405050
Type XX 2d Generation.
Issued between 1970 and 1986 in 770 pieces, which makes it quite tough to find.
But did you know that two versions existed? A two and a three counters.
Did you also know that the less common is the two counters, with 364 pieces, while the three counters were made in 406 pieces.
Credit: Monaco Legend Auctions.

Credit: Antiquorum:

The funny thing is that I saw the two counters several times, when I never saw the three counters in real.
Interesting with this typical case shared by other brands ( Heuer, JLC among others ) and a bezel we also see on the JLC Shark Chrono. Same for the crown.
Best,
Nicolas