I HAVE A MARLIN 1870 MODEL 336 30 30 SN. 20050932 CAN YOU TELL ME WHAT YEAR IT WAS MADE? THE GUN IS IN MINT CONDITION. THANK YOU
I'm not sure what the "1870" part of your post means. If the rifle is a Model 336, the beginning date for manufacture is 1948. This was a modified version of the Model 36, which in turn was a modification of the Model 1893/93.
In any case, the serial number indicates your rifle was manufactured in 1980.