Michael. Emperor of Trebizond, 1344-1349 AD. AE 18, 1.85 g. 

EVGEN, St. Eugenius standing facing, holding long cross.
XMI-M, Michael standing facing, holding trilobate sceptre and 
shield. 
Retowski 6; SB 2626. Good Fine. Extremely rare. 

Used with permission of CNG (cngcoins.com)
260, Lot: 613. Estimate $150.
Sold for $900.