amanico[JLC Moderator]
405076
Rolex Prince Jumping Hour.
I have to confess that I have a very limited knowledge when it comes to vintage Rolex before the 50's. A shame as there are some pure marvels.
Such as this Rolex Prince with its jumping hour.
It is all a matter of shapes.
Shape of the case:

Shape of the dial:

Contrasting with the flat case back:
And I didn't even mention the curious bracelet!
A joy to see!
Best,
Nicolas