This old glass light shade is an I-5 Holophane made by the Heisey company. It has vertical ridges to a scalloped edge. Each ridge divides into multiple ridges in two bands around the center which gives it an unusual appearance. The band near the top has horizontally ribs on the outside and vertically ribs on the inside. It is marked around the neck; Extensive Holophane - I-5 - 106130.
This fits a standard 2 ¼” shade holder and the outside diameter of the neck measures about 2 3/16”. It measures about 7 5/8” in diameter at the bottom and is approximately 5 1/8” high. It is in fairly good condition with minimal wear but it has some haziness, possibly water stain iridescence from being used outside. This has been taken into consideration in the pricing.
The pictures are not shown at actual size. Please refer to the description for actual measurements.
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