Adam Mickewicz (error)

Belarusian History and Culture. Commemorative coin dedicated to the 200th Annyversary of Adam Mickewicz. Coin has error in dates. Instead of 1798-1855, coin has dates 1798-1854. only one existing coin is known. Only 100 coins are sold before error was noticed.
Image copyright: www.belcoins.com
Obverse: 
within the circular geometric ornament – the relief of the State Coat of Arms of the Republic of Belarus; beneath – year of issue, silver coin – fine silver content and alloy standard; inscriptions along the rim – at the top: "РЭСПУБЛIКА БЕЛАРУСЬ" (REPUBLIC OF BELARUS), at the bottom: "ДЗЕСЯЦЬ РУБЛЁЎ" (TEN ROUBLES) on the silver coin and "АД3IН РУБЕЛЬ" (ONE ROUBLE) on the copper–nickel coin.
Reverse: 
in the center – the relief effigy of Adam Mitskevich, beneath – inscription: "A. МIЦКЕВIЧ" (A.MITSKEVICH), in the right–hand part – years of his life: "1798–1854".
Country: 
Catalog ID: 
BY13ER1
Value: 
€7877
Mintage: 
100
Quality: 
Face value: 
Material: 
Purity: 
0.925
Weight: 
16.82g
Diameter: 
33mm
Year: 
Type: 
Shape and style: 
Edge: 
Designer: 
Source of information: