Bulova 1955 -Unknown

Lugs are much wider on the 'DUO WIND' case.

This Case looks 'CLIPPER' /  'WATER TITE' style.

Case is one piece with a removeable bezel around the Glass, movement and dial lifts out through the face.

Stamped *WATER TITE*

a very confusing Model admin as the 1940's 'CLIPPER' 'SEA BEE' and 'WATERPROOF's all look similar.

The problem were having is naming watches by Dial and Case style and not by design. There are similarly styled cases that are not designed the same and vise versa, cases designed the same that are styled differently. ie: lug variants.

Above is an image of one of My personal 1950 Duo Winders'. This case is not 'WATERPROOF' or 'WATER TITE', the caseback snaps on and the Dial reads 'Duo Wind' (in database).

Any similar model in a Waterproof / Water Tite case that says 'Selfwinding' on the Dial is not a 'DUO WIND' but a 'CLIPPER' or ?

IMO

'DUO WIND' on the Left measures 33mm. Case on the Right measures 31mm.

Fifth

What is the name of that case on the right (two toe lugs) 31mm?

Wayne

Wayne,

With 100% certainty?  I don't know. The Case design is like a 'WATERPROOF' 'CLIPPER' 'WATER TITE' etc. Movement lifts out.

I have the same lug style in a much larger Case - 34mm round, an Automatic with a Gold Caseback held in place by a Stainless retaining ring dated L4?

The early auto's are really hard to nail down modelwise, as You know.

Again, we're attempting to ID Watches by lug style which works very well, untill the 1950's automatics when the same lug styles can be found on differently designed Cases.

The unknown We are discussing is the same design as the watch on the left above IMO. 'WATER TITE' 'CLIPPER' 'WATERPROOF'

At this point crystal dimensions should sort them out quite a bit...Scott???.....

Circular Crystals are rarely named - Case circumference and design.