U-945 Thomas

MERSHON TYPE / JUNE 7, 98 [Incuse on upper skirt]

This very rare insulator was made to Ralph D. Mershon's patent for a wide upper skirt and a very extended inner petticoat intended to protect the pin from flash-over. This is a 3-part glaze-filled insulator.

White . . . . . . . . . . . . . $870-1250