Jim, over at gclr sent me a bunch of cards. Among them were some real oddballs. What dies this look like to you?
It looks like the Phillies team card from the 1979 Topps set. But look at the back.
The color is off. And so is the card stock. It is printed on much thinner stock than the 1979 set. Based on a little research, I think this is from an uncut sheet of team cards which Topps offered via mail order. Here is the Phillies card from the 1980 sheet. The color difference on the back is very pronounced when compared to the regular set (which was a very dark blue).