Valerian 11 Silver Antonius Billion Roman Imperial Coin 256-258 AD AE3 F

.Valerian II - Roman Caesar: 256-258 A.D. -
Posthumous Issue
Billon Silver Antoninianus 20mm (2.10 grams) Rome mint: 258-259 A.D.
Reference: RIC 24a, C 13
DIVOCAESVALERIANO - Radiate, draped bust right.
CONSECRATIO - Altar.

Weight: 3.37g

This coin has high silver content

Roman billon coins

This term is applied to coins of silver mixed with much copper alloy, or to copper with a small alloy of silver.

From the reign of Gallienus to that of Claudius II (ad 253 to 270), almost all the coins were made of billon.