Added "F" designation as this watch follows all criteria in adverts, page 8, image 19. Will update with more pics and info when watch arrives. In need of a lot of work to case, but watch is running. 1 fifth second gradations to dial register. Radium numbers and hands, red seconds hand.
EDIT:- Caseback will not come off, so looked further and the bezel is removable, as in pics. Could not take out stem as should come out in two parts, male and female, but won't. After letting mvmnt. drop partially out, I could see inside for info, and caseback reads, "BULOVA WATCH CO. SWISS, 53, 246166." L3 on mvmnt. BXW, 10 BUC, 17 jewels. Running smoothly and keeping very good time. Length lug tip to lug tip is 37mm. Width minus crown is 30mm. lug gape is 16mm.
EDIT:- Name change to "Seabee" as watch is on leather strap, as per 1953 ad.
In reply to Bob, a generic 'WATER TITE' by FifthAvenueRes…
If anyone ever wonders why it's sometimes difficult to correctly identify a vintage Bully here is why.
We have conflicting adverts that indicate the Water-Tite came with both SS expansion band and Leather strap AND a "simiar" watch with leather band is a SeaBee.
1954
1954
1954
1953
What is meant by "Similar"? :-)
1951
Its certainly not the Water-Tite "L"
Just a note on hacking; before the feature was added to watches utilizing a hacking lever to contact the balance, you could hack your watch by pulling out the crown and turning and holding pressure counter clockwise. This has the same effect as a binding minute hand, the power from the mainspring cannot, or should not, overcome the friction of the cannon pinion. if it does, your CP is slipping and worn.
Above is the post, "the Seabee has a numerically calibrated register", If it is meant that the Seabee has all 12 numbers then yes that is true as per the 1954 ad. But this watch is from 1953, and has a 1/5th of a second calibration on the outer register, a possibly quasi-pseudo-military effect. Is this what you meant Mark?
Also with "similar", is it 'the same as' or 'not the same as, but looks a bit like it'? These are after all adverts, not Bulova records, and as such we can only be tentative with a lot of the I D's of many models when using them, and not confuse guesswork with fact, as so many have been proved to be when new evidence comes to light.