£15 Early American teapot makes £460k

Last year the bidding for the sixth known surviving piece from the John Bartlam factory in Cain Hoy, South Carolina opened at £10,000. It rose quickly in increments of £5000 up to £200,000. Then bids continued in increments of £10,000.

The teapot was estimated at £10,000-20,000. It was found at a flea market.