Redsking 6cent Stamp in frame Whats it worth??

[VABCHSKINSFAN]

Hey everyone I buy storage units and sell the contents for a living. I recently came across a picture frame at the top is the redskins logo but at the bottom is a stamp. The stamp is about two inches wide and one inch high. Across the left side from bottom to top is the word football. there is a date in the upper left corner "1869-1969" The picture on the stamp is a football player on the left #30 listening to a coach wearing a trenchcoat and a top hat. Do any of you guys know what I have here? I would post a picture of it but I can't seem to figure out pics on this site. If anyone wants to give me a address I will send pics.