And things like this make you stop and wonder a lot of stuff, like who made theses and how, How were they distributed, and what could you buy with something like this, who was the last person to hold this in their hands before it was lost to the soil and 2000 + years later recovered by a machine that could not have been conceived of at the time it was lost ?It really is great when a coin can provide a 'doorway' to history/culture/mythology/religion--like your Janus coin.
Don in SoCal