Source: UNESCO World Heritage
Nice view of St Johhn Mustair with Europa stamps used. Thanks to Rosmarie of Switzerland.
Kloster St. Johann Mustair. Nice pictorial cancellation of Mustair. Thanks to Thibault of Switzerland who mailed from Mustair.
A multi-view of Mustair with the Convent of Mustair in the top right corner. Thanks to Beckers of Belgium.