Thanks, toungueriver. Yes, I only recently was made aware of that fact from a posting by Adam who just bought one of these. He determined that the Schrade, Ny. 880 ran from 1973 to 1975. A nice little factoid that makes me feel better about my only 880 not being a Schrade Walden.
Buying this knife was a spur of the moment thing since I was really after another knife from that seller. I thought the 880 would go hi but I watched it just in case. My budget dictated that I only get one or the other. I'm glad it worked out the way it did.