Your Wards shotgun which is really a Stevens model 87 will range in price between 50-100 dollars.
The wards westernfield model sb87-ta was made by the stevens firearm company for montgomery wards(westerfield).There model # was stevens model M87.
Its worth whatever someone else is willing to pay for it !! Depends on the condition to be honest. But the highest I have seen them in "great" condition was around $100.
Tesco, Brighton
Want ad, for sale ad, on line auctions, gun shows, gun shops, pawn shops, estate sales, garage sales.
Don't know, but I got one also. My Dad gave it to me in 1971 as my first gun. Still works great. Good Luck! John in VA