These have all been recently cleaned (level 1: q-tips & alcohol) and tested in my NES. They all work fine - bringing back great memories!
These games can include just the cartridge, or also the box, the manual, etc. The box may include the original foam insert - or not. There may be the internal black sleeve, there may be a manual. And all the combinations of those.
Here's how to decode this from the listing titles: