amanico[JLC Moderator]
373995
Jaeger Lecoultre Powermatic E 163 / Futurematic E 510. Two different power reserve watches
Two very different ways to display it.
Classic and conventional on the Powermatic E 163, more original on the Futurematic E 501.
The ancesters of the Master Reserve de Marche we now, nowadays.
And we were in the Fifties, here!
Best,
nicolas