Yesterday evening Tony and I were talking about Yukons and the "Yukon shield" and he said, "I have one...you want to shoot it?". I said, "heck yeah", and then I mentioned that Reese and I were talking about something he was refering to as "rat tail bolsters"(which had nothing to do with "rat tail flutes"). Tony explained that there used to be a folding hunter that people called "rat tail hunters". He said, "I have one of those too, want to shoot it?" I said(you guessed it), "HECK YEAH!". He went on to say, "You should shoot this old Case folding hunter too and all three together and point out the differences".
So, here we have(left to right in the first image) a rare Catt. Yukon LINER LOCK! (UH...who is it that they say "invented" the liner lock

?) This knife may go back to sometime before 1910...notice hammered pins. The bone is purrrrrfectly yummy. The butt of the handle goes down to about (top to bottom) 3/8" width and the front has a straight bolster. Also notice that the original brass bail is intact. These knives could be ordered with or without the bail. The Yukon is a single blade knife and could be purchased with or without a locking liner.
Next is the Kinfolks Folding "rat tail" hunter and is sometime incorrectly refered to as a Yukon. This knife has early Rogers bone and may go back into the 1920s...notice TWO PINS on the front edge of the bone. Later knives had a single pin up front. The differences are obvious: "copperhead style bolsters, two blades, and a little bigger butt. ( I know Campbell..you like big butts

)
The last one is the typical Case folding hunter. This particular one is out of the 50's (if I remember right) and has late Rogers bone. Notice the differences between it and the rat tail hunter.