I'm not sure if we have one like this, the case is made in Taiwan. Very 1970's style to say the least. The movt is in very good condition. Tritium luminous hands and dots at the indices.
N2 on the movt, N3 on the case.
I'm going to update this as I go along- I have done some preliminary work on the watch, and I can say that the steel is harder than I normally encounter. My cutting abrasives have less of an effect on it, and it takes a lot longer to get any kind of finish, whether textured or polished. There are a few deep scratches on the case back, and to remove them would affect the Bulova markings, so I am leaving it the way you see it in the image at the very bottom.
There are several robust gaskets within this case, heavier than normal. There is a round one that presses against the crystal, and flat one that the locking ring on the back of the case depresses against the case, under the heavy case back. The case back is unusually thick, and heavy.
The crystal itself is the shape you see, but is a flanged type, for lack of a better word- we see these elsewhere as tv screens or the like, with the raised centre portion being the part that is visible, with a larger area around it. In this case the larger round part extends to the inside limits of the case to contact the round gasket. The large case back then presses the crystal against the gasket when the assembly is screwed together. The crystal also has a tension ring along its periphery, and this contacts the edges of the case back, also providing tension against the gasket and case interior.
When I first saw the ID as being a 'Sea King,' I was a bit surprised, but clearly Bulova put some thought into this. The only thing missing to make this an actual rated dive watch would be a screw down crown, and I'm tempted to make that mod. An actual Bulova screw down crown like we see on the re-issue 'Devil Diver' with its threaded tube would be ideal, and a current stock item.
The stem is a very solid rod of steel, threaded only where it needs to be. This is due to the quickset function, which means pulling on the stem to change the date.
I'll post some more pics as I go along, this is one of the few times I actually have a 'before' pic, I usually forget to do that.