26.6 mm road seatpost; silver alloy, not black, something nicer than "kalloy" or "laprade." Suntour, Gipiemme, Campy, Thomson, etc. Normal wear and tear okay, as long as it's totally functional. I can get a new Thomson for $70 + shipping.

Also, the left (non-chainwheel) side crankarm for a Sugino Mighty Competition crankset, 170mm length.