What is a coin with an angel on both sides?
I'm curious to inquire about a particular type of coin that seemingly defies traditional minting conventions. Could you elaborate on the significance and origins of a coin adorned with an angelic figure on both its obverse and reverse sides? Such a design seems rather unconventional in the realm of numismatics, so I'm eager to learn more about its history, symbolism, and potential value in the collector's market. What factors contribute to its uniqueness, and what makes it stand out among other coins?