Bulova 1973 Sea King

Submitted by Reverend Rob on March 14, 2020 - 2:51pm
HH
Manufacture Year
1973
Movement Model
11AOCD
Movement Jewels
17
Case Serial No.
T000303
Case shape
Square
Case color
White
Case Manufacturer
Other
Gender
Mens
Watch Description

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.

EDIT - 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. 

Taiwan cased Bulova
Taiwan cased Bulova
Taiwan cased Bulova
Taiwan cased Bulova
some refinishing on Sea King HH
Reverend Rob
Posted March 17, 2020 - 6:47pm

Here is the assembled movement after cleaning, minus the hour wheel. I'll get another pic when I get it all back together as a watch.

assembled 11AOCD dial side

Reverend Rob
Posted March 22, 2020 - 2:55am

Ok, here she is all serviced and ready to go. I don't have an appropriate bracelet but in the meantime might look good on a leather band or Bund strap. I can say that the crystal does need to be replaced, I will have to locate one. Otherwise the watch looks good and runs well, there was never any moisture inside this case.

Re-assembly is quite fiddly with this type of model, the crystal seats quite snugly agains the inner gasket, and you have to install the tension ring for the crystal before you put it in, otherwise it will not go in, needless to say. Then the movement must be carefully placed in the case so as not to disturb the ring, because it pops out easily. I did this probably five or six times before I cemented the tension ring into the crystal. If the new crystal does not come with such a ring, I can always get the old one out with solvent. When it's all screwed down it is a very solid assembly indeed.

BulovaSeaKIngHHfinished

mybulova_admin
Posted March 22, 2020 - 3:44am

That is a fantastic restore. The case looks amazing.

Nice work Rev!

Geoff Baker
Posted March 22, 2020 - 9:57pm

Well done Rev, I'm truly impressed with how it turned out. Congratulations!

PS - remind me the lug spacing?

Reverend Rob
Posted March 24, 2020 - 10:42am

Thanks, guys, it was just one of those watches that seemed to call out to be done, the design is superb. At first glance, I underestimated it entirely, I'm not a fan of the square or odd shaped 70's watches, but this one has many redeeming design features. 

Lug spacing is actually 17.5mm, but 18mm bands would certainly fit and an 18mm bracelet could easily be made to fit. I have something similar, but I'm keeping my eye open for an original Bulova one, as unlikely as that is.