Alexius I, 1081-1118AD, Class J Anonymous Follis, 1081-1118 AD. Constantinople. 

IC-XC to left and right of bust of Christ facing, with 
nimbate cross behind head with five dots in the sections
holding gospels and raising right hand. )-C at upper left and right.
Cross with globe and two dots at each end of the arms, X in centre, large crescent below, around the cross are four more globes surrounded by small dots.

SB 1900, DOC p. 700-701

The image of this lovely example is used courtesy of the labarum.info database, June 2019.