When the GMT II was introduced in 1983 it only showed "Oyster Perpetual" on the face. There are thus two variations of the 16760 with this first variation lasting only about a year around 1983 and 1984. The addition of "Date" probably came in late 1985. Larry, I believe these are the only two variations of the black/red "Fat Lady" produced from 1983 to 1988. I bought mine new in 1986, but was only aware a couple of weeks ago that I have a 1984 version 1, which seems to be fairly rare.
