Dr No[Moderator Omega - Wristscan]
37726
Last time I checked, those special rubberized . . .
. . . racing straps were no longer available from Omega. Best to hunt one down now if the Split is a keeper.
This is one of the most, if not
the most, desirable auto Speedies - 7750-based chronometer,
sans date. I've seen all three versions, and came close to buying one (blue dial) several years ago. Very, very cool.