There's an auction on Gunbroker for a Flaig's custom .222 with a Mannlicher stock on an L461 action. The dealer has it advertised as an "L401" and there's a picture of the receiver and sure enough, it looks like the 6 has been overstamped with a zero. I don't get it - why would anybody do that? Or maybe it's a double hit on the 6 that makes it look like a zero? Or the worker stamped a zero by mistake and then overstamped it with a 6? This is a head-scratcher. Pic below.