Nicephorus II Phocas, AE 15mm, Cherson mint. 

Obv: Monogram Sear 52 resembling a cross with P-K-K-N at the ends of the arms, clockwise from top.
Rev: Monogram Sear 53 resembling an A with E to left, crescent 
on dot above, C to right.

SB 1784, DOC 9

Courtesy of byzantine.chat.ru, Feb. 2011.
Sketches: Forvm Ancient Coins Numiswiki.