Your Stevens model 30 was made from 1933-1934.
The serial number range for the Stevens model 520-30 military shotguns is from 30,000-70,000.As to the year of manufacture you will probably have to contact Savage/Stevens directly.
Your wards Westernfield model 30 was made for Montgomery Wards by the stevens Firearm company.The Stevens model 520 and yours are the same firearm.These shotguns were made from 1936-1942.
Winchester Model 94 serial number 2545395 was manufactured in the year 1962.
Your Marlin model 336 was made in the year 1981,with the serial number that you have provided.
With the serial number that you supplied,your Winchester model 1894 rifle was made in the year 1966.
With the serial number that you have provided,your Winchester model 1894 rifle was made in the year 1954.
With the serial number that you have provided,your Winchester model 1894 rifle was made in the year 1950.
With the serial number that you have provided,your Winchester model 1894 rifle was made in the year 1981.
With the serial number that you provided,your Winchester model 1894 was made in the year 1967.
With the serial number that you have provided,your Winchester model 1894 rifle was made in the year 1964.
With the serial number that you have provided,your Winchester model 1894 rifle was made in the year 1952.
With the serial number that you have provided,your Winchester model 1894 rifle was made in the year 1964.