TYPE Medieval Bosnia, Tvrtko II Tvrtkovic (1421-43), AR grosh (possibly Rengjeo type II-1), 2.33g DESCRIPTION . Obv: Crowned helmet over coat of arms (with crowned T inside), legend around: DN S TUARTCO REX BOSNE, stars at top, sigla R-T in field Rev: St. Gregory standing nimbate with long staff, legend around: S GREGORIUS NAZAZENUS REFERENCE: Ren 890-920 (type II-1 ?) GRADING: AVF, flan flaw (or faint c/m), scarce, toned ORDER INFO: S1423, $85 Hard to determine exact Rengjeo type due to weakness in the characteristic areas, though the distinguishing criteria for these variants are typically just sigla in the forms of dots or stars. However, this specimen is remarkable as clearly one of the heaviest grosh of its kind (given that very few published specimens reach even 2 g).