Updated

GENEVA (AP) — An auctioneer claims a rare stamp has fetched a record price at a private sale shrouded in secrecy in Geneva.

David Feldman says the Swedish "Treskilling Yellow" has been sold to a group of buyers for at least the $2.3 million price it set a record for in 1996.

He says the buyers asked to keep their identities and the winning bid confidential.

Saturday's auction was closed to the public.

The stamp is believed to be the only surviving misprint of an 1855 three shilling stamp that was supposed to be green. It has fabled status among collectors and is considered one of the world's most valuable objects for its size.