Large Antique Cambridge Glass Company Uranium Glass 3 footed, 13 Hole Green Flower Frog. The flower frog is a true antique, as it is signed 1916. The flower frog has a 4 inch diameter. The flower frog is a great addition to vases, console bowls, and flower arrangements. The flower frog is in very good condition, there are 2 rough spots on the bottom near the holes. However, the top holes and side of the flower frog is in pristine.