WTB Sigma Lens Hood for a Sigma 170-500mm

I successfully bid for this lens on ebay last week. It didn't come with a lens hood and therefore I am wondering if anyone has a spare hood that they would be willing to sell.

I know that it is a long shot but I thought that I would ask before I try to get one from Sigma. Their website still lists it as an available accessory.

Thanks for reading.

John