I bid on, but didn't win this eBay auction yesterday. The auction was for two "AE Antoninianus" - although both are denarii.
I looked at the coins wondering if they are bronze coins, or if they are actually heavily encrusted silver coins.
The Maximinus I, the coin on the left is struck on a very large and round flange, something I haven't seen on fourees or bronze issues. That made me wonder if it might not be a silver issue.
The Severus is actually a rare DIVO SERVERO PIO issue, if silver.
I didn't bid much because I didn't want to get stuck paying a lot for two junky coins, but in the back of my mind I can't help wondering if there is not silver under all that encrustation.
All the silver coins I have found have been heavily encrusted and you'd never know they were silver when you first saw them.
Have any of you discovered clues for distinguishing between fourees and heavily encrusted silver coins? I'd be interested in knowing.