Happy Couple features a Vintage German Reverse Intaglio Glass Cabochon which is a crystal cut in the form of a domed cabochon, that is carved in intaglio on its flat back with a motif that is realistically painted in minute detail and is surrounded by a transparent ground. These vintage glass intaglio cabochons were popular from the mid 1800s through the 1960s. This particular design is from the mid 50s to early 60s.