You probably have a Wilkenson knife. These were not made in two pieces, but they were made in two-piece molds. Most manufacturers didn't take the extra step to polish out the mold line, Wilkenson did.
You probably have a Wilkenson knife. These were not made in two pieces, but they were made in two-piece molds. Most manufacturers didn't take the extra step to polish out the mold line, Wilkenson did.