If so I think it’s pretty cool considering that these heavier and higher purity denarii were only made for a very short period of 2 years according to the Wikipedia article below before reverting back to 2.57 grams of 79% said: That sounds about right assuming minimal wear and tear. Like if I took the coin to a refinery and had it melted down and refined to. If it was like 2.97 grams I would figure it’s just margin of error difference but I’m curious what happened with mine being so overweight compared to the standard denarius for the time.Īlthough I see now it says “actual silver weight” which I think means the amount of pure silver rather than the coin’s weight. Now I know that the minting techniques weren’t very precise but it seems like mine is outside the margin of error. What’s really interesting is according to Wikipedia his denarius in 168 should’ve only weighed around 2.67 grams but mine weighs 3.37 which is nearly 25% larger than it should’ve been.

So basically I know it was minted several years after co-Emperor Lucius Verus had died and during the middle of the Antonine Plague. 'TRP XXIII' dates the coin to 'mostly AD 169' (more precisely, from Dec 168 to Dec 169). Just some further info on your coin, that surprisingly isn't mentioned on the slab: it is in the minority of Roman coins, in having a precise date on it.

1 denarius to usd