The letter J prefix to your serial number indicates that your Marlin model 336 RC(regular carbine) was made in 1952.The letter J was marked ahead of all serial numbers for the year 1952.
Year
WAL-MART
Part of the serial number. No real meaning.
It can stand for record serial number which were serial numbers placed on vinyl records.
G=1950, and SC=Sporting Carbine.
ASTM serial number MOLINS CUTTER
Victory
ESN is an acronym that can stand for a number of different things. Some of these include electronic serial number, electronic security number, English speaking nations and engine serial number.
International Standard Serial Number
it's part of the serial number
It is on a tag under the stand, with the model number.
Your serial number reads 01537pw153.the 2 letters in your serial number(pw) stand for the year 1984.That is the year of your shotguns production.