It's date stamped see related links for info.
Serial 718943w
100-350 USD
The W ahead of the serial number indicates that your Remington 870 wingmaster was made in 1972.
Made by the Remigton Firearms Company.
Contact Remington Customer Service thru their website.
Remington did not make a "Wingmaster" shotgun in 1936. The Remington Wingmaster (Model 870) was first introduced in 1950. remingtonwingmaster.com
Yes.
Yes
They are all still made in Illion, New York, I believe.
To determine the exact value of a Remington Wingmaster 20 gauge model 870, a few different things would need to be taken into consideration. Some of these things would be the age and condition.
$2
Do a search on barrel codes, I believe that will give you an answer