U-2257: Germany
3 1/8" X 3 3/8" (79mm X 85mm)
(dome top inkstamp) GELS BAVARIA
Picture courtesy Bob Berry |
3 1/8" X 3 5/8" (79mm X 90mm)
No Markings . . .
Picture courtesy Bob Berry |
3 1/8" X 3 3/8" (79mm X 85mm)
(dome top inkstamp) RIG . {RIG} .
Picture courtesy Bob Berry |
3 1/8" X 3 3/8" (79mm X 85mm)
(dome top inkstamp) RIG . {RIG} .
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.