As a result, the Baden 9 Kreuzer misprint became the most expensive German postage stamp. It is not only German stamp collectors who have a penchant for errors, freaks, and oddities, however.

Ball cover with Mauritius 1 red This is a unique cover that bore the first two stamps of Mauritius issued in 1847. The stamp contains the ‘Post Office’ instead of ‘Post Paid’. It was sold for a ...