Guy -- TetraGun is marketed thru FTI Inc in NJ, ((973) 443-0004. I got a bottle at the Tanner gun 'n knife show in Denver. Good lubricant, but not as slick as some for one-hand openers.
Vern -- a) the bolster is all brass except a steel spacer at the butt behind the lock release, b)without a micrometer my closest measurement is 1/2" thick at the butt, same as at the front, c) nail nick is deep and well defined, can't see any machine marks, but it's got a black accent in the nick that might be hiding any marks. Does not look stamped, d) address is "BUCK KNIVES,INC., P.O. Box 1267, El Cajon, California 92022". The handles are a bit unusual (to me) -- not reddish brown like rosewood or cocobolo, actually have a slight greenish-gray look, not a very fine grain; held on with three brass pins, the center pin being slightly larger; the pins are not flush, they're polished but rounded slightly above the slab level.
Thanks eveybody -- didn't know there was so much to know about Buck collecting. And BTW couldn't find info on the Club on the Buck site, except that it exists.
Mike