Basil II Bulgaroktonos and Constantine VIII, AV Histamenon Nomisma, 977, Constantinople, 23mm x 25mm, 4.38g.

+ IhS XIS REX . REGNANTInm, Bust of Christ facing, wearing nimbus 
cruciger ornamented with two dots in segments in the limbs of the 
cross, holding book of Gospels and raising right hand.
+ bASIL C COnStAntI b Rm, crowned, facing busts of Basil with short 
beard on left, wearing loros of square pattern, and Constantine VIII, 
beardless on right, wearing plain chlamys, holding patriarchal cross
between them, single border of dots.

SB 1797

Note from Sear on p.346, SB1795: "During this long reign, the size and 
fabric gradually changed from small, thick flans to broad and thin 
ones."

Courtesy of beastcoins.com, March 2011
sb1797