Examples of the type

Picture 1 of the example of Aspron Trachy - Manuel I Komnenos (Constantinopolis) Picture 1 of the example of Aspron Trachy - Manuel I Komnenos (Constantinopolis)
© ILIJA (CC BY-SA)
Private collection
ND (1143-1180) – (en) DOC#13f - Obverse: Asterisk above throne on both sides / Reverse: One jewel on emperor's loros
26 mm
It starts with Θ instead of IV