vintage Gold plated wolf howling earrings with Blue Opal inlay.

vintage Gold plated wolf howling earrings with Blue Opal inlay. These are lovely, they are stamped on the back but I cannot make out what it says, only the numbers 89. They are gold plated and the Opal really stands out surrounded by the gold. I believe them to be from the US as that’s where my mom picked them up. In excellent condition as can be seen by the photos. Length: 2.25” Width: 1”