He puts the coin away. As long as he's being taken seriously about magic there's no need to verify it.
"I'm not sure what's different enough to mention. Magic, I suppose? It's rare because there isn't much of it to go around, so it usually winds up taken and passed among the rich, or given directly by the gods to their priests or demigod children. I'm part of the priesthood of the god Diamondeye, being her Champion. She's the god of preservation, conservation, museums and libraries. As Champion I'm expected to do her will. My main project these past few decades has been the preservation of lives - figuring out how to use my powers to develop new vaccines and medicines so the little magic I can do each week will have more of an effect.
"Mages and orich-alloys are two types of magic. There are also potions, vampires, wizards... A few others. Those five are the ones of any real significance in the regions I know. Technology is usually more useful at most things, especially these days with the recent advancements.
"Soth - and South Cardinal in general - isn't as technologically advanced as North Cardinal. North Cardinal invented a number of things somewhat recently. Steam power, airships, electricity, combustion engines, horseless carriages... I've seen a few pictures and read reports but haven't gone up in person.
"Uh, species... Almost all humans. Some solon - amphbious tentacle people - in the tropical swamplands of western South Cardinal. Merfolk in the oceans.
"We haven't had any unusual weather, and I haven't heard of any before I got here."