This is a "Nikkor-Q Auto" 135mm/2.8 (not 13.5 cm!), serial # 302362, factory AI'd, with the built-in hood. It was recently cleaned by John Titterington, a top-notch repairman in Leawood, KS, so it's optically and mechanically perfect. Only the slightest signs of wear, mostly a couple of light scuff marks on the hood. Glass looks like new. Focusing is perfect, no backlash, tightness or looseness. I recently got a Sigma 105mm/2.8 EX macro, and have found that the Nikkor just doesn't make it into the bag much anymore. I don't miss the extra 30mm, and I'm always looking for macro opportunities besides.
For those of you unfamiliar with Nikkor nomenclature, the "Q" is an older designation for the number of elements ("Q" as in quattro, as in 4 groups of 4 elements).
I would also consider a trade arrangement involving an SB-?? Speedlight (TTL for my FM3A, but I don't necessarily need other bells and whistles; a non-Nikon brand might do as well), a 35mm/f2.8 or faster MF or AF lens, or a tripod having a minimum height of around 12" (for macro work).
"Schlagfertigkeit ist etwas, worauf du erst 24 Stunden später kommst."
- Mark Twain