1934, Czechoslovakia, a set of two souvenir sheets of 15 stamps each (Scott # 200a-201a / MiNr: 330x - 331x)) commemorating the Centenary of the National Anthem, 'Kde Domov Muj?' (Where is My Home?), 9,600 sets were issued and Scott  prices the set at $ 1,100. Expertise signature on gum side. Michel 330-331; €950 ($1,240).