Polonus does not provide an expertizing service, however, the following list of experts are recommended and available for expertizing in their respective areas of qualification.

American Philatelic Society Expertizing, c/o Gary Loew 100 Match Factory Place Bellefonte, PA 16823 gary@stamps.org 814-933-3803 x205 General Poland including Krakow and Gniezno issues

Bogdan Pelc Gütlingstr. 4 14167 Berlin GERMANY Bogdan.pelc@gmx.de +49 172 13158581 Poland #1, all postal history to 1914

Stefan Petriuk Neue Str. 3 D-24977 Langballigholz Germany petriuk@t-online.de General Poland, Port Gdansk, Central Lithuania

Zbigniew Korszen Skr. Poczt.82 00-950 Warsaw 1 Poland zkorszen@onet.pl All areas of Poland

Janusz Berbeka Skr. Poczt. 100 61-890 Poznan Poland polak49@post.pl All areas of Poland including locals and plebiscites