1977 Tudor Mini Submariner Date "The Time Machine" Ad. 
.
The compact Submariner-Date. 3/4 scale for the smaller wrist. Solid, stainless steel Oyster, case is pressure-proof down to 330ft. Blue or black revolving bezel and dial. $295 with matching bracelet (9091/211). 
.
Measurements
Length 10-1/2 
Width 2-1/2