Stainless steel case dated M0, made in Germany. White patterned dial with luminous hands and dots, inner seconds track with blue second hand with a shorter length matching the track. Swiss-made 11AFC 17-jewel movement is dated M1.
For a long time I could not identify the model, but I recently ran across a 1960s Cola ad with various models. One of the models shown is a Midshipman with model number 11304. The pricelists show this model number as the Midshipman GW @ $49.50. The design looks to be a match to my watch. Of course the dial in the ad has been altered for the company name.
What do you think - Midshipman GW or Unknown?