Gorgeous little antique gold & pearl brooch

Absolutely divine little piece of 10K gold and freshwater pearls, likely 100 years or older. The details on the leaves are exceptional and the dainty pearls make lovely grapes. The brooch measures about 1-1/4" in either direction and weighs about 2.3 grams. Marked 10K on the pin. There are also a series of numbers (327-18-25) hand etched on the bar of the clasp, which I spotted with a jeweller's loupe but was unable to photograph clearly. I am not sure what they signify! This piece is in very good condition.