150 Years of the National Museum in Warsaw
Collectors Exchange in Gdynia
Poles rescuing the Jews – the Ulma, Baranek and Kowalski ...
Prices of coins Poles Who Saved the Jews – the Ulma, Baranek ...
150 years of cooperative banking in Poland
Prices of coins 150 years of cooperative banking in Poland
Cataloque prices for year 2012 and auction prices
Statistical analysis of coins issued in a year 2011