A Large and Very Rare American Pressed Colorless Glass "Thumbprint" Compote, Bakewell, Pears and Company (1836–1882), Probably made in Pittsburgh, Pennsylvania, Circa 1860

One of the earliest patterns used in the Pittsburgh area, “Argus,” also known as “Thumbprint,” is a deliberate imitation of cut glass. The concave oval facets create a highly reflective surface and a dramatic optical effect. The rims of the cover and the bowl are scalloped to fit seamlessly together and form a perfect sphere.