Alexius I Comnenus, 1081-1118. Electrum or AR Histamenon nomisma trachy, 26 mm. 4.24 g. 

IC – XC, Christ seated facing on throne with nimbus cross, holding
gospels and raising right hand
[ALEXIW DECPOT TI] W KO MNHNw, Alexius I standing facing on dais, wearing crown and loros and holding labarum and cross on globe. 

DO T1a; Sear 1892.
Of the highest rarity, apparently only the fourth specimen known.

About extremely fine / good very fine

Numismatica Ars Classica NAC AG, Auction 29 (May 2005), lot 742, sold for 7000 Swiss Francs

with kind permission of Numismatica Ars Classica, Zuerich.