Dr No[Moderator Omega - Wristscan]
37543
We don't see many because . . .
. . . relatively few were made. It's the scarcest of all the original 300M references by far.
In a sense it's the SM equivalent of ref 105.002, the last of the straight lug Speedies. Perhaps one could assemble a two-watch themed collection with both of these.
Art