Domitian AE20, Uncertain mint in Cappadocia. 81-96 AD. 
Legate: Caesennius Gallus, 8.24g; 

Obv: AYT DOMITIANOC KAIC CEB, Laureate head of Domitian right.
Rev. EPI KAISENNIOU GALLOU, Coiled serpent on altar. 

Lindgren&Kovacs p. 91, 1698f.; RPC II 1690; Syd. p. 142, 135a; Waddington 6753. 
Very rare.

Used with permission of CNG coins, www.cngcoins.com, May, 2010