Roman Republic, D. Silanus L.F., ca. 91 BC, AR Obverse Brockage Denarius

NGC Ch VF Strike 3/5, Surface 4/5. Here is a really pronounced minting error whereby a coin, unknowingly stuck in the die, makes an incuse impression of itself on the next blank planchet to come along. This still happens today.

Private Utah Collection

Exceptional dark toning with hints of iridescence.