This ring by Alisa Michelle Designs is called the “Caesar Is Not Just A Salad Ring.” The description of the ring on the website that was selling it (Hautelook.com) said, “Caesar was a powerful man that was named the dictator of Rome for life. This gold plated ring is detailed with an etched image of Caesar. This ring should be worn for strength and courage!”
Wow. This image is of an ancient powerful man taken from a coin, but of course the image is that of Alexander the Great, not of Julius Caesar. Alexander is depicted wearing the horn of Ammon, which no Roman could get away with in the Late Republic, not even Caesar (who, when he is depicted on coins in his lifetime, is usually depicted veiled or laureate).
Here is a very nice image of the type of coin being reproduced on the ring, the Alexander-as-Ammon type being a favorite of Lysimachos of Thrace.
The sad thing about this mix-up is that Alisa Michelle Designs could have used practically the same marketing slant if they had appropriately identified the image, since of course Alexander the Great had a pretty impressive track record himself, and his image could probably “be worn for strength and courage!” just as easily as that of Caesar.