Watch List notes:

Claudius II Gothicus. AD 268-270. Antoninianus (19mm, 3.36 g, 12h). Rome mint, 10th officina. 3rd emission, circa summer AD 270. Radiate head right / Mars advancing left, holding olive branch in right hand and spear and shield in left; X/–//–. Normanby 976; RIC V 72; RIC Online 521. EF, brown patina, clashed reverse die.

From the Finn Johannessen Collection, purchased from Gitbud & Naumann, 16 April 2011.