Hi, I've just bought a watch movement, and I wondered if you would be able to advise me on the case that was fitted when new, and what case could be used now. The watch dial reads The Northern Gold Smiths Co Newcastle Upon Tyne & on the back of the moment reads, Watchmakers to The Lords of the Admiralty. The movement measures 20 Lignes x 8mm deep. Serial number 345530. The movement is a stem wind pin set. I would appreciate any info. Regards, Neil. P.S. Ive been told it could be a Rotherhams movement.