Rare variant of the Aurelius Cotta denarius with the letter C next to the eagle, on the reverse.
Roman Republic
L. Furius Philus (121 BC), Denarius 121 BC, Rome mint
Obverse: draped bust of Vulcan right, wearing laureate pileus, denomination mark behind, all within wreath
Reverse: eagle standing right on thunderbolt, head left, letter C before, L•COT in exerque, all within laurel wreath
Weight 3,89 g.