The Victorinox and Wenger 1991 Soldier Swiss Army knives are a 93mm / 3 1/2" ribbed alox knife, with a 1991 date on the blade tang. This model was standard issue for the Swiss army during 1991. Both versions still have a cutting notch in the bottle opener, and a hollow rivet, similar to the 1990 Soldier. This was the last full year for the cutting notch, which is sometimes absent on the 1992 Soldier.