Friedl Perforations

Some articles on friedl:

Sigmund Friedl
... Sigmund Friedl (1851, Lipník nad Bečvou, Moravia – 1914, Vienna) was one of the most famous Austrian philatelists ... Sigmund Friedl's interest in postage stamps started already at the age of 13 ... Finally, Sigmund Friedl established his own stamp museum in his villa in Unterdöbling ...