Last Saturday I was in the Ashmolean Museum in Oxford, browsing idly the Roman exhibits. Suddenly I realised that I was looking at a set of small finds, all of Empire-period deities; and I started looking much more closely to see if there was a representation of Mithras. And so there was!
Sadly I had no camera with me. All I had was the camera in my smartphone, which is nothing special. Anyway I had a go, and, after several attempts, produced this.
I also photographed the card in the window. I have found, looking for images online, that the presence of such a card in the collection of photos is really good. So here is mine:
The reverse of the brooch was harder to see, but there was a pin sticking out to one side from the back, just as with a modern brooch.
So … not a wasted day, in any sense!