I need value info on an old Captain America poster.?

I have a 1969 Capt. America Meets the Falcon poster. The colors are still quite vivid, however the poster is rather worn. I cannot find any poster of its kind relatively close to the descript. of what I have. And according to some sites, this poster does not exist. So how bout it Capt. America and Falcon fans... whatcan I expect for this extremely rare poster?