originally intended for car racers and many of the very early Omega Speedy ads show the Speedy in car racing context. So the A.C.P. might have been the first (and last) important car racing club approaching Omega with this request.
Omega, back then not knowing that they would quite shortly after see their watch on the wrist of astronaut Ed White floating in open space (1st EVA). „And the rest is history“ ….
Cheers, HSTE