Identified as Kajtuś, the hero mutt discovered the mediaeval bracteates whilst walking with his owner near Wałbrzych. Dating to the first half of the 13th century, the one-sided coins will go to a museum after first being analysed by academics.
The coin, thought to have been minted to commemorate the Polish victory at the Battle of Khotyn in 1621, features the armoured bust of King Sigismund III without his crown, wearing a shoulder plate with a lion’s head on the front, whilst the reverse features the coat of arms of the Republic of Poland.
With only the National Bank of Poland possessing the right to issue coins in the denomination of the złoty, Mennica Gdańska concluded an agreement with the tiny island nation of Niue to legitimize the ‘glow in the dark’ coin.
Measuring nearly 7 centimetres in diameter and weighing a hefty 174.9 grams, the 50 duct gold coin from 1621 is masterpiece of baroque engraving and a pearl of Polish coinage.