Oh, that's worthless! If you send it to me, I'll be happy to safely dispose of it for you for free...

But seriously, for gun values, it's worth what someone's willing to pay for it, and to get a feel for that, I check
www.gunbroker.com (eBay for guns)
I did a search and narrowed it down to Winchester Model 70 Coyote's for you, not sure if the direct link to the search results will work or not:
http://www.gunbroker.com/Auction/SearchResults.asp?SearchResults.asp?SearchType=0&Keywords=Winchester+Model+70+Coyote