Dearest fellow coin enthusiasts, I hope this letter reaches you all in the heartiest of health. For those who could not attend our latest symposium on unusual coins, I bear tidings of a recent change in categorization that you should all become immediately aware of. To be brief: your current collections of unusual coins have been recatagorized as ancient coins. I will still happily trade for your ancient coins as I once did when we called them "unusual." I will also gladly take any new unusual coins you may find in exchange for my ancient coins, so have no fear of missing out! The society has deemed that all coins in more recently discovered territories shall be called unusual coins until such time that they have been properly examined and catalogued, at which point they shall also be reclassified as ancient coins. Collectors of unusual coins will no doubt make themselves known in such locations and offer interesting new incentives to trade with them. This system of discovery and reclassification shall continue in perpetuity. Or until the society changes its mind. Thank you for your time, and I hope to see you all at the next symposium. —Chin-Hwa, Collector of Ancient Coins