This looks to be a Model 236U (aka Woodsman or Huntsman)* model from c. 1972 that was been repaired by Victorinox in the mid- to late- 1990s and so the scissors are not period correct. The 5 turn corkscrew, clip point blade, and 2.7mm main blade are all pre-1974 features. * In the early versions of Victorinox names, the Huntsman was the standard four layer knife (blades/openers/saw/scissors) with a LNF, the Woodsman was the same model without LNF. After the phase out of the LNF on the majority of 91mm models in the early 1970s, the Huntsman becomes the standard 4 layer model with T&T, the Woodsman is the model without T&T. This distinction doesn't last long and my the early 1980s Woodsman = Explorer with saw, Huntsman = standard 4 layer model regardless of T&T/keyring.