Seal of Mindaugas

The Selonian act was mentioned by Pope Alexander IV in a papal bull, dated July 13, 1257, confirming the territorial transfer.

[1] The seal is about 85 millimetres (3.3 in) in diameter (the exact size is impossible to determine because its edges have chipped off).

According to the 1393 description, when the legend was still intact, it read + MYNDOUWE DEI GRA REX LITOWIE (Mindaugas by the grace of God King of Lithuania).

[3] Already in the beginning of the 19th century, German historian Ernst Hennig raised doubts about authenticity of the act.

He further stipulated that the act was forged while Mindaugas was alive and that the seal belonged to a completely different person, perhaps Magnus III of Sweden or Andrew II of Hungary.

[3] Antoni Prochaska dismissed any doubts regarding authenticity based on the fact that the act was mentioned in a papal bull.

Karol Maleczyński also rejected ideas about forgery and argued that at some point the seal fell off and was affixed anew thus explaining different color strings and wax used to fasten it.