1980 United States, set of 30 oversized cards.
I didn't think I was going to like this set, due to the cards being so big, but I have to admit it's a nice set. One card per pack is sort of disappointing, as well as the fairly generic backs and the lack of individual numbers on the cards, but the photos are glossy and nice enough to make up for it. The first couple scans are card fronts, followed by the two possible backs (checklists), both sides of an unopened pack, and a few scans of the box (very polite box!). This is another item that isn't all that expensive; you should be able to get a box for under $20 that will yield a full set of 30.
A variation of this set also exists as "test market cards", which are much rarer. The backs are different, and are individually numbered 1 - 30. The wrappers are more like those on wax packs instead of crimped paper, and the display box is completely yellow with no markings.
WANTS FROM THIS SET: None.