See related link.
Check the Remington Society of America, date barrel codes and location. http://remingtonsociety.com/rsa/questions/barrelcodes
Perfect condition, 28" BBl with Rem chokes, $350.00. Short rifle sighted slug BBl with no chokes $290.
http://remingtonsociety.com/rsa/questions/barrelcodes
150-225 USD They have the internals of a Wingmaster. Fit and finish of the working parts puts them FAR ahead of any Express. They are as smooth as any Wingmaster. The exterior receiver is not polished as well as a Wingmaster, and the wood is cheaper. This was Remington's first attempt at producing an 870 to a lower price point, and unfortunately didn't create as much profit as the rough-as-a-cob Express.
$200-$250 if better that 90%.
D081337n
$139.95
I just purchased the same gun manufactured in 1971 with the 28" 2 3/4" and 30" 3" barrels in 95% condition for $276.50
100-400 USD
$75 to $250 depending on condition. Express do not get the value of the wingmasters.
$200
Your Remington express magnum shotgun will range in price from 180-350 dollars,depending on the overall condition of the shotgun.These prices reflect between 60%-90% of the original finish,and a good bore.