Bob, The knife on eBay (291813925338) you refer to also has a W.D. Randall etching on the blade. It also is in the 1991 catalog. I was told the etching on that special Model 10 blade was not authorized by RMK. That is why I returned it to the eBay seller. He is a great seller and returned my payment without issue. I did not tell him why I was returning the knife.
Eric