Believe this to be a 1973 Sea King Variant. Made several attempts to remove the case back and gave up for fear of damaging it. Caseback dated N3.
My listing as a 17 jewel is based on assumption. It appears to have never been opened and has spent a very long time in a dresser drawer. Case is sunburst yellow gold with an almost metal flake silver dial that was really difficult to capture in a photo. Clean polished yellow gold indices with stippled center lines and blue highlighted gold hands with blue center sweep second. Double printed black seconds tracks and "Bulova" Text.
As close as I could come in the database is Sea King "GD", which appears to be identical except the GD is in a stainless case with a whale on the dial. I haven't researched price lists, but would guess this is a "G_". First letter G with a second letter designation.