Roman helmet expected to bring large sum in Christie's auction

Bidders, get your checkbooks ready... A late first century Roman helmet is scheduled to be auctioned October 7, 2010 by Christie's Auction House. Predicted cost: US$242,000 to $363,000. (photo)

The helmet includes a full face mask, framed by curls, and is topped with a griffin. It was discovered by a metal detector in northwestern England.