Got a carbon peeler -- used for potatoes -- by Robert Herder, Solingen. Very common in Europe. Was curious about the geometry. Well, it's asymmetric, but not as we know. The side supposed to get in touch with the potato -- the right side with a right-hander -- is flat, the left side meant to evacuate the skin if I may say so is convex. The edge somewhat off-centered to the right. The gross edge OOTB: right side ending at some 4 degree, plus a small bevel of some 20 degree, left side some 6 degree perhaps.
Wouldn't use it for any task with board contact, though. It's soft steel, around 56HRc.