U-2273: Portugal
2 1/4" X 2 1/2" (57mm X 64mm)
(crown inkstamp)
Picture courtesy Bob Berry |
2 1/4" X 2 1/2" (55mm X 61mm) . .
No markings .
Picture courtesy Bob Berry |
2 1/4" X 2 1/2" (57mm X 64mm)
(crown inkstamp)
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators 1986 Supplement by Marilyn Albers & Jack Tod.