During the 1930s, the Fenton Glass company produced a number of opalescent patterns, one being spiral optic. This pattern was issued in the standard colors of blue, cranberry, and French (white) opalescent first followed by green and blue ridge later in the decade. Produced in many different shapes including baskets, bowls and vases. This attractive rose bowl shape has a catalog number of 201 and was produced during the mid 1930s. Opalescent parallel swirl lines begin at the base and run up the side to culminate at the white opal ruffled top. The bowl measures 4 1/2” tall and 5” across the body. In factory original condition, showing no damage or repairs. I will mention, and as pictured some scratching on the bottom most likely due to movement on a shelf or surface. The inside is clean, showing no staining or residue from use. A beautiful example indeed. Thank you for visiting my shop.