Proceed with caution. I think this is a fraudelent or hijacked auction. The lens shown is one I formally owned, # 113. Based on the "buy it now" message for $ 1500 and the "contact me before bidding" messages in the subject body, I believe there is something very fishy about this auction.

http://www.ebay.com/itm/SUPER-RARE-P...item415ece2288

Dan