I got my data out for the 106 and we did black micarta handles from 1971 through 1972. Stampings will be either BUCK, U.S.A. or BUCK, 106, U.S.A. without date code. There were only about 3500 of the above made.
I always say, the 106 does not get the respect it deserves. When you look at the scarcity of the various versions and the price they sell for on Ebay or at shows, it does not make sense.
I hope this helps.
Director of Consumer relations Buck Knives Inc.
Buck Collectors club Liaison, Member #123