Coin depicted roughly twice actual size*

As of Trajan Decius

Bronze as, 23mm, 10.76gm, issued AD 249 Rome mint.

Obv: IMP C M Q TRAIANVS DECIVS AVG, Laureate, draped bust facing right.

Rev: LIBERALITAS AVG, Liberalitas standing holding abacus and cornucopiae.

References: Sear 9428, RIC 120a.