Omega Speedmaster 145.0055 in white gold with moonphase on the rusty beam.
Fabulous design, the understatement of white gold, apparently very limited production run (even though not a „limited edition“). Quite some boxes to be ticked. Cheers, HSTE ...
This was the first of the moonphase breed, no? . . .
. . . and very limited production, if memory serves correct: ~ 300 produced in the mid-'80s. Just saw a So Cal collector's amalgamation of Speedies yesterday, including a '68 145.012 and '80 145.022. I think I need a '74. ;-)