I have a pair of Camillus knives, one i know is a jet pilot survival knive dated Nov. 1968. The other I am curious about. Its overall length is 12" with a blade length of 7" black handle,blade and sheath. It has a very nice false edge at 2 3/8" with U.S. over CAMILLUS N.Y. on the blade under the handle. Just curious to know if its WWII,Korean war or Vietnam era.