275 AD., Severina, Rome mint, Æ Denarius, RIC 6.

Severina, Rome mint, officina 5, emission 11, 275 AD.,
Æ Denarius (18,5-19 mm / 2,51 g), silvered bronze, axis medal alignment ↑↑ (ca. 0°),
Obv.: SEVERI-NA AVG , draped bust right, wearing stephane.
Rev.: VENVS FELIX / Є , Venus, draped, standing front, head left, holding apple with index finger and thumb in right hand and scepter in left.
RIC V, I, 316, 6 (common) ; cf. Göbl, MIR 141t ; CBN 266-277 ; Coh. 14 .

Dark brown patina with remaining silvering and few layers
ex. Kölner Münzkabinett, Tyll Kroha, (auction ?), no. 439

Aurelian´s post-reform denarius was equal to 10 asses, the sestertius was equal to 2.5 asses, the antoninianus (double denarius) was equal to 20 asses.