Actually, I think the tiny trapper beats all those mentioned... just over 2 inches closed.
I think it does, too.
Jimmy here is a old thread of small 2 7/8" knives or less there are some cool items, check out post #2 & #65 very interesting pieces.
http://www.bladeforums.com/forums/s...-Traditional-Knives-2-7-8-quot-closed-or-less
Pete
The smallest one I own is the Pen 01 pattern. It went into the vault in 2010. It was in production from 1991 to 2007. Its just barely over
2 1/2 inches. Mine is Mammoth Ivory, but I think it was offered with 20 different scales throughout production. Close to that anyway. It makes the Tiny Trapper, Tiny Muskrat, and Tiny Toothpicks look pretty large.