I've seen a lot online and in our stickies about SAK dating. This seems to concentrate around 91mm and 84mm with information on some other sizes once in a while.
We know that the Rucksack, for example, was discontinued in 2017, but, when was it first introduced? Also, the front tang stamp is the 4-line type with Rostfrei and a large V in Victorinox, but the back of the tang simply states "Patented." There is no cross and bow symbol to go on.
Dating by the big V and tool evolution seems possible but I wondered if the 111mm followed any different paths or timelines other than side lock to liner, and other than the introduction of the one hand openers.
Anyone?