Bulova 1950 Watertite Duo Wind

Awwww ^%$*#@^^^  now I'll never get this watch named. Too many possibilities. but I think the "F" is right. As for the subject watch, My vote is for the duo wind "E".

JP  Not the Watertite "F". Different lugs.  The 1950 date of the ad showing Watertite "G" "I" and "F" don't match subject watch, but do indicate, for those cases/models (variants), they are advertised as Watertite in 1950.  It doesn't really help too much w/ subject watch, which in 1950 matches the 1951 ad for the Watertite Duo Wind "E" ad.  If subject watch were 1952 or later, I would vote the Watertite "E".  The snap-back info for Duo Wind vs watertite is helpful. The ad date flow I'm using to arrive at my vote is the same logic used in the other Duo Wind currently being discussed here, and is sound IMO.

I'll try to ad up the votes to date LOL... The Watertite Duo Wind  model name is not in the main base model list, so regardless of vote, it can't be published as such until Admin adds that name to the model list.
 

When did Bulova actually stop using the name "Doug Wind"? I was recently given an L3 Clipper - dated on both case and mvt. - that has the 10CSC 17J mvt. The dial is marked only "Bulova" and "Selfwinding".

Subject is actually the WATERTITE "E".

This 1950 ad shows the F, G, and at the right end, the DUO-WIND "E".

I just love saying "I told you so"! 

Two ticks for tentative as published...while we figure out the Duo Wind vs Watertite "E"s.  Good conflicting ad find Bobbee!
The 1950 ad directly above shows a different watch- and different price $71.50.  The 1951 ad (below) in the root record has both names- no pirce..but sure looks like subject watch, even says Duo Wind below hands...

And another 1952 ad from further back in this thread.....
I noted the Bulova model price lists also show a Watertite Duo Wind "E", as well as a Watertite "E", and the lists give the exact same unique Bulova model number and price for both watches.... 

Looks like both ad watches say Duo Wind on the dials. The watches in two of the three ads look the same. BUT now we have a price for the 1950 ad stating Watertite "E" - $71.50   vs $55 
I think the subject watch is the Watertite Duo Wind "E", since the Watertite E has a pirce of $71.50...which is not in the model list above (but all models are not necessarily listed in the price list).  It comes down to the year and the advertised price IMO....or as "close" as i can figure.

EDIT: I changed the incorrect price of $72.50 above to $71.50  The previous was a typo
 

The $71.50 price is for the Duo-Wind "E", not the Watertite "E". Both Watetites are $55.

EDIT:- As the production date for the subject, which is round in shape, and the rectangular Duo-Wind "E" in the new ad is 1950,the subject cannot be a Duo-Wind "E".

I think the "watertite duo wind E" works.  The 1950 ad in root record looks correct.