Movement Serial No.:
Case Serial No.:
Dial marked 'Oceanographer', so I think that's a good start....
Not sure if the movt is based on anything, but the simplicity of the date mechanism is refreshing to say the least. Bi-Directional winding with KIF Elastor shock setting. Case made in West Germany, and has the reference code 2894, M8 date code. Bulova Signed crown, most likely original with two gaskets.