Scott Trepel of Seigel Auction Galleries describes the rare "Inverted Jenny" stamp that sold for a record $2 million. A first-class U.S. postage stamp will set you back 66 cents these days ...

That stamp, known to philatelists as the Inverted Jenny, has transcended the hobby and gained a measure of fame. And the other day, one of them, originally priced at 24 cents, sold for more than ...