The triumph of Priapus, a giggle ring.

Gold 18th Century Erotic Neo-classicistic Intaglio Ring: "The Triumph of Priapus"
A classy 18th-century ring with an image that, once you understand what you're looking at, makes you giggle. The image is known as "The Triumph of Priapus," and we even found some 18th-century drawings with this scene belonging to The British Museum.
As far as we have been able to determine, only a few of these rings with this scenery are known to exist. We were lucky enough to find a very interesting thesis (2011) by Raimon Graells i Fabregat, in which he dives fully into the history of this ring.
In Greek mythology, Priapus was a minor rustic fertility god, protector of livestock, fruit plants, gardens, and male genitalia. Priapus is marked by his oversized, permanent erection, which gave rise to the medical term priapism. He became a popular figure in Roman erotic art and Latin literature and is the subject of the often humorously obscene collection of verse called the Priapeia.