Crawford 044/7, Roman Republic, Anonymous, AR-Sestertius

Roman Republic (Rome mint 211-208 BC.), Anonymous.
AR Sestertius (1.22 g, 11-12 mm).
Obv.: Helmeted head of Roma r.; behind value mark, IIS (two and a (semi) half as).
Rev.: Dioscuri galloping with lances r.; stars above, below ROMA in a linear frame.
Crawford 44/7 ; Sydenham 142 ; BMCRR Rome 13 .

The original "sesqui-tertius".