This appears to be an engraved version of the 1934 Senator. It is a white gold clamshell case. The movement is a 10AN with 15J and a circle date code. The dial is all yellow gold raised applied numbers and minute track. I've searched for an ad showing an engraved version of the Senator but have not had any luck. There are other engraved versions attributed as a Senator. I have not seen any other Senators with a fully applied hour markers and minute track.
Movement Date Code
Case Serial No.