Commemorative Coin "The purple Emperor (Apatura iris)" 

Put into circulation on 15 November 2013 
Design: D.Surajewska (Poland) 
Minted by: The Mint of Poland PLC., Warsaw, Poland 

Silver, Alloy standard of silver: 925 
Denomination: 20 rubles 
Weight of coin, g: 28.28 
Fine silver content, g: 26.16 
Quality: "proof", 
Pad-printed elements are used. 
Diameter, mm: 38.61 
Mintage, pcs.: up to 8,000 

The coin is round in shape with a raised rim on the obverse and the reverse. The edge of the coin is plain. 
Obverse in the center within the inner circle against a stylized wing of a butterfly: the relief image of the State Coat of Arms of the Republic of Belarus, beneath – the year of issue, and a circumferential inscription: РЭСПУБЛIКА БЕЛАРУСЬ (THE REPUBLIC OF BELARUS); on the left – alloy standard, on the right – the trademark of the Mint of Poland PLC, beneath – denomination: 20 РУБЛЁЎ (20RUBLES). 
Reverse in the center against the relief image of plants – the purple emperor reproduced with the help of pad-printing technique; beneath, on the right-handed side, an inscription: APATURA IRIS.