Andronicus IV Palaeologus. Usurper, 1376-1379. AR Half Hyperpyron – Stavraton (29mm, 8.34 g, 12h). Constantinople mint. Facing bust of Christ Pantokrator / Nimbate and crowned facing bust of Andronicus. DOC 1255-6; PCPC 323; SB 2544. VF, toned. Extremely rare.