Lauri-58-mushroom-stainless; (58x17x2mm), another small blade 2 1/4" long, 5/8" wide and .078" thick. This shape is typically used in knives for gathering mushrooms. It would also be excellent for caping knives, or for dressing smaller game.
May be paired with the 13*18*2-SHAPED bolster shown below. You would have to lengthen the slot a bit.