THE BYZANTINE EMPIRE
MANUEL I COMNENUS, 1143-1180
Mint of Thessalonica
Electrum aspron trachy 1160-1167 (?). Obv. The Virgin, nimbate, seated on backless throne, wearing tunic and maphorion and holding medallion of the infant Christ; in field, MHR ligate – ΘV. Rev. ... – Legend misstruck.( OΔHMMTPI) Manuel on l. wearing crown, divitision and chlamys and holding akakia, and St. Demetrius on r., nimbate and wearing short military tunic, both holding star shaped labarum between them. Sear 1974. DOC pl. 14, 9. 2.19 g. Scyphate form. Clipped to half weight. Almost extremely fine

Update: Underweight because they were minted for use in Trebizond under Alexius I (1204-1222), see Prof. Dr. Andreas Sommer: Die Münzen des Byzantinischen Reiches 491-1453. Mit einem Anhang: Die Münzen des Reiches von Trapezunt. Regenstauf: Battenberg Verlag, 2010, S. 343 f., Nr. 61.2.2 u. 61.5 and passim.