Poland
Third Republic of Poland (since 1989)
Av: First Polish stamp, 50 YEARS OF POLISH PHILATELISTIC ASSOCIATION - 1950-2000, Rw: PZF logo, Philatelist, below three philatelic medals, below HISTORICAL / RESEARCH / BIULETYN / PHILATELISTIC, designed by Zbigniew Stasik
silver-plated and oxidized tombac, 70.0 mm, 139.11 g, mintage 900 pieces