I have some low grade football I'd be happy to trade for other low grade football (60s and 70s). I'd also be happy to trade any baseball, basketball, racing, or non sport for pre- 80s Topps football.
Small caveat: I do have some tobacco and trade cards that I would require mid-grade or better cards in trade.
For me though, I would rather have a filler grade vintage football card in my collection than any grade of non-Topps or non-football.
My two-cents is worth slightly more than a penny.
-- Chad --