It is probably a Compact (91mm about 3.5"), there is a slight chance that it is a rare early 84mm (about 3.25") Golfer (if the bidders start coming out of the wood work and going nuts on the price...). Compacts usually come with the mini screwdriver in the corkscrew (but that was not always the case and they are easy to lose).
dalee100 all Victorinox 91mm and 84mm knives have "Officier Suisse" on the tang as their designs are all "descended" from the original Officers Knife. The 58mm, 74mm, 93mm (Alox, Soldier/Pioneer/Farmer), 108mm and 111mm do not, as they are "descended" from or originators of different knife styles (kind of like a Stockman comes from a Cattleman, but neither are related to a Trapper, a Peanut or a Lockback).