This KutMaster's a Division of Utica Cutlery Company very knowledge. I went to Flea market at MetLife Studium of NY Giants/Jets football team player outside parking a lot. I browse and spot that vintage Girl Scout Pocket Knife. I ask the guy how much these cost. He say, '$25' I bought it for $25. Not bad. I study these old knife. Not sure which green bone OR Green Delrin But I don't know how old this knife is.