It's my day off and there's a foot of snow on the ground and it's snowing again. So I thought I'd dig these out and share. In the middle of 2008 is when they switched models, that's why the 2 have the same year. Still looking for that one without the 1 of 1000 stamp.
1890 was the first issue of a pocket knife, it had wooden scales, a cutting blade and a flat screw driver blade.
1901 they introduced synthetic scales
1908 they added a block in the handle to seperate the srpings
1908 2nd variant they made the blades of stainless steel
M51 still looked the same, but they changed from a clip point blade to more rounded, and changed the logo on the scale
M61 changed scales to aluminum, r style changed, bottle opener added, awl changed shape from round to more of a flat stamped piece
M08 complete overhaul, liner lock added for blade and screwdriver, saw added, cross slot screwdriver added, blade serrated, hole added to blade for one-handed opening
Top is M1908 dated '40 Elsener
M61 3rd variant '66 Elsener
M61 4th variant '08 Victorinox
M08 '08 Victorinox
M08 '09 Victorinox
And of course they made the new one for the civvie market as well, and did make one for the Bundeswehr for a time. My example is made by Victorinox. The hole in the blade is longer, and not as round, maker marked on the bolster.