Austria, Post World War II, Austrian Costumes and Historical Clothing Series, 1 Schilling, Issue depicting Tyrol, Puster Valley, Scott 538 variety, Michel 911 I xa, Variety with Horizontal Gum Ridges, Mint VERY Lightly Hinged, Nice Perforations, Fine-Very Fine Condition, Scott cat. $50.00, Michel cat. €60.00.  The hinge mark is barely discernible. The key issue for the Costume set.