Gallienus, AE27 of Parion, Mysia. AD 253-268. 10.33 gr.

ILLR IICI NN CK, laureate, draped, cuirassed bust right.
C C I H [P A] beneath Gallienus, holding spear, on horseback
galloping right. 

cf SNG von Aulock 1345 and BMC 122. 
Very rare. 

Note: Many of Gallienus' coins of Parion have barbarized
legends.
With permission of cngcoins.com, auction 82, Lot: 830. Sold for $1600.