Item no. 3683551532. Small frame, 50 cm. Currently at only $224; probably won't go very high, because the auction title seems designed to make the sale as inconspicuous as possible.
The seller has a feedback rating of only 1, and the bike is in Pennsylvania but the seller in is Argentina (!). At the risk of stating the obvious, anyone interested probably should step carefully. Might be a good time to use escrow.
Steve Maas
in dreary Long Beach, California