More "siblings", this time from 1946.

Case 62823 Movement 500598 (TagMuseum)
Case 62830 Movement 500694 (Mine)

Cases were obviously in the same parts bin, and both dials have the optional applied markers.
The museum example has a silver dial with dauphine hour/minute hands, gold chrono hands and a blue date marker.
My example has a gold toned dial, fancy hour/minute hands, blued chrono hands and a red painted date marker.
I can't find watchmaker's marks on the inside caseback...

Jurgen