Issued by Liechtenstein in 1967, this distinguished two-stamp set honors renowned philatelists Carl von Lindenberg (1850–1928) and Maurice Burrus (1882–1959). The finely engraved portraits reflect Liechtenstein’s tradition of high-quality steel engraving, with strong detail and classic typography. The 80 Rp stamp commemorates Lindenberg, a pioneer in organized philately, while the 1 Fr stamp honors Burrus, one of the most famous stamp collectors of the 20th century. A desirable thematic set for collectors of philatelic personalities, European issues, and engraved portrait stamps.