The rarest variety of Vilnius 3 groschen from 1664, with an error in the initials of Titus Liwius Boratini.
Instead of the initials T.L.B. under the bust, we have L.B. without the letter T, which is an obvious mistake of the engraver.
The last auction listing on Onebid is the WDA auction from 2021, where this type in condition 3 was sold for 8.280 PLN.
Very rare coin, not listed in Tadeusz Iger catalog.