amanico[JLC Moderator]
400157
Jaeger Lecoultre Deep Sea Alarm E 857, European version.
One photo from Jaeger Lecoultre Heritage Gallery of a nice Deep Sea Alarm E 857 European.

The shape of the case, the plexy, the bezel and this dial... Just gorgeous. Ok the triangles of the bezel are not matching, but hey...
Best,
Nicolas