Brand new, never installed, test fit, or really even touched.
These are the E9x or E82/88 BMW Performance rear calipers that only came in yellow/gold with the Ferric Grey BMW Lettering. Come complete with pads, and should be direct bolt on e9x 328i, 330i, and E82/8 128i and 135i.
$350 OBO. I know these fit the rear 135i stock rotors. Not sure if you need to purchase larger rotors on the other models.
Edit: pics added, sorry, only ever opened one of them, other sealed.