Orchi believes there're only 2 WG Gloss Dial variants Ref 16760 GMT II aka "Fat Lady"

[springer]

An update to the "no date" dials - the early dials missing the word "date" after Oyster Perpetual.

Below are the two variations of the "no date" 16760 GMT-MASTER II dials. Since these have not but numbered anywhere in the past, I will refer to them in my photos as the Mark 1a and Mark 1b "no date" GMT 16760 early dials.

If you look at them closely, there are several variations - the most notable being the style of the dial coronets and the absence of the hyphen between GMT and Master in the 1b dial.

These are early 16760 dials, probably found mostly on the early 16760s in the lower serial numbers - up to 8.5 million range of numbers.