Silesian bracteate heller with the capital letter T, which was previously attributed to Tost, but new research by prof. Borys Paszkiewicz excluded such attribution.
Unfortunately, the professor was unable to propose new hypothesis, so he attributed coins of this type to Lower Silesian issues.
Silesia, Lower Silesia, Bracteate heller 15th century, unknown mint
Obverse: the letter T made of three wedges
Diameter 14 mm, weight 0.24 g