Edessa, Mesopotamia, King Wael AD 163-165, AE 22mm, 8.65 gm.

Bearded head of Vologases IV, wearing tiara, diademed helmet with back-flap, B behind.
"Wael Malika" in local script, bare-headed and bearded bust of King Wael left, within laurel wreath. 

Sear GIC 5726; BMC 1; Babelon 1; MACW 437. 
Very rare.

With permission of CNG, cngcoins.com, Mail Bid Sale 67, lot 983. 
Sold for high bid of $1250