On 2010-05-26 auctions on the National Bank of Poland has been finished and issue's prices was established for coins commemorating the 95th anniversary of the birth of father Jan Twardowski.

Coin with the denomination 10 zł:
 - Reserve gross price: 71 pln
 - Max gross price: 75 pln
 - Selling price (price of issue): 75 pln
 - The number of coins to sell: 49.000 pcs
 - Total emission: 50.000 pcs
 - Date of issue: 2010-06-01

2010-06-01 is a date of issue coin with the denomination 2 zł and total mintage of 1.000.000 pieces.