RRR-, Boleslaw the Wry-mouthed 1107-1138, Duke's Denarius, Wroclaw, R8

Very rare ducal denarius, Wroclaw after 1097, on the obverse a cross-shaped IS monogram, inscription BOLEXSLAVS, on the reverse St. John's Head, inscription in the rim + S IOHΛNNES. Kopicki gave the highest degree of rarity R8 (as Boleslaw II the Bold), Stronczynski does not note, Suchodolski (Beginnings of Minting in Wroclaw) type 2. The coin is very rare and achieves very high ratings on the auction market (highest WCN44 - st. III+ 13,750 PLN). The offered piece came to us again after 7 years, ex. 2018 auction WDA-MiM 7 - 3,360 PLN https://onebid.pl/pl/monety-rrr-boleslaw-krzywousty-1107-1138-denar-ksiazecy-wroclaw-r8/220904 A typologically important item.