nicolsson
路Two vintage Omegas in my collection with original black dials, this '56 American cal 502 SM Calendar . . .
[no crystal in either image]
. . . and a '57 Connie . . .
. . . with rose gold hands and markers.
There's a Seiko and IWC, too, but the op was looking for Omegas only.
Cordially,
Art