Image rights: wildwinds.com

     Claudius, Æ28, (16.25g) Antioch, Syria, Laureate head right,
     countermarked with anchor over countermark of P[R] / Large SC in
     wreath. RPC4277, countermarks Howgego 371 over 599. 

McAlee Supp. 1, p. 30 (this coin).

The anchor was applied over the PR countermark thus confirming
Howgego's dating sequence (68-69 AD for the PR and 69-72 for the anchor) 

Ex-Edessa Hoard. (not a true hoard but an accumulation of coins found in and 
around Edessa in modern times.)