Postage Stamp of the Week: Inverted Jenny

A rare 1918 Inverted Jenny stamp sold this past week for $825,000, after another one sold last month for $977,500. In contrast, I don't think I've ever spent more than a few dollars on a single stamp.

Homer Simpson once found a sheet of 40 Inverted Jenny stamps at a swap meet--he foolishly tossed it aside, muttering "airplane's upside down."

BWT, I'm in Washington, D.C., home of the National Postal Museum and the Old Post Office, which has a killer observation deck.