Gold Histamenon Nomisma of
Constantinople.

Obv: +IhS XIS REX REGNANTINM (or similar), bust of Christ facing
with nimbus cross having one or two dots in each limb of the
cross, holding book of gospels and raising right hand.
Rev: +bASIL C CONSTANT b R (or similar), crowned, facing busts of
Basil, with short beard, wearing loros with square pattern, on left,
and Constantine, no beard, wearing chlamys, holding long patriarchal
cross between them.