HSTE[Omega Moderator]
4555
1 of 50 .... back in 1964: the Omega Speedmaster ref. 105.012-63 "A.C.P." of which 50 pieces ....
.... were delivered to the Automovil Club Peruano on July 2, 1964.
I think this is the only time, that Omega printed a "customer-logo" on the dial in the factory. (As you know, the "Meister", "Tiffany" etc. few Speedmasters were double-signed in those Jewlery stores, hence not in the Omega factory).
Cheers, HSTE