This is a Marlin 336 chambered in 30-30 Win. with a 20" barrel.  I believe the round capacity is 6+1.  Based on the 8 digit serial number (2509XXXX) it is believed to have been manufactured in 1975. It is in pretty good condition with the exception of some scratches on the right side of the stock (Pictured), presumable caused by riding in a truck's rifle rack.  This rifle comes with a camo sling, gun case, 4 screw scope mount, and a thumb extention on the hammer. It has a hard black plastic buttplate and the signature gold trigger. The JM stampped barrel is also stamped as follows "The Marlin Firearms Co North Haven, Conn.. Est 1870 Micro Groove Barrel - Mod 336 Cal 30-30 Win."  I have never loaded or fired this rifle, but everything appears to function smoothly and  as it should.