This is a vintage clear glass Hemingray D-510 Insulator that stands 3.5" tall. It has a smooth round top that flares out around the edges like a mushroom cap. It has a 3.25" wide base with a smooth bottom.
Around the bottom of the insulator it reads Hemingray made In U.S.A with 0-4 above Hemingray followed by four dots. On opposite side it reads D-410.
There is a chip on the upper tier of insulator. The insulator is still very clear with little discoloration.
Around the bottom of the insulator it reads Hemingray made In U.S.A with 0-4 above Hemingray followed by four dots. On opposite side it reads D-410.
There is a chip on the upper tier of insulator. The insulator is still very clear with little discoloration.