All About Pocket Knives

Hi, does anyone know if Buck put a thin finish on the 110, I guess it would be around 1976, when it had 3 small headed inlay rivets, over the years I have had two or three that looked like they had a very thin finish, it looked like you were looking thru a thin glossy layer, the brass would still get tarnish spots where it had scratches, I know Buck doesn't like wasting money and it seems like they wouldent do something like that, but I had more than one at different times. Gerber put a thin finish on the FS lockbacks that looked like it around the same time, they put a slip of paper saying you could remove it with alcohol.
Thanks
George God bless