Bingo!

My goodness it is nice to find amongst the inbox fires after a long holiday weekend an email with a coin of a very interesting type one has not seen before!

I love contorniates. They seem to me to represent the numismatic collecting spirit amongst the Romans best in how they celebrate the past and popular entertainments and even coins themselves. This reverse type I particularly love for how it helped with the decoding of a control-mark (older post, another post on this technology).