My personal taste, I don't like square or rectangular coins. By the way I don't know any square / rectangular commemorative coin that appreciated in value after some time. Furthermore, it is a coin made by Mennica Polska (Mint of Poland). Nice coins but I didn't see so far a single coin that was sold above issue price even after years. Maybe is the mintage, maybe the countries they mint for, but I would buy only if I like the coin without any investment purpose. Just my opinion. Alex.
