OPCO Ohio Porcelain Co. Zanesville Ohio Vase

This small vase is 4 inches tall. The front is a light green color and the back is cream colored. There are dark green leaves and a yellow flower that was applied separately to give it a 3D effect. The opening at the top is 1 3/4 inch x 1 inch. The back (not the bottom) is marked PAT. PNG. O.P. CO. ZAN. O.
There are no chips or cracks, but on one of the leaves ther is a spot where the glaze did not completely cover. Great addition to any collection.