U-1804: Denmark
2 1/2" X 3 1/2" (61mm X 86mm)
(top ear inkstamp) 1930
Picture courtesy Bob Berry |
2 1/2" X 3 1/2" (61mm X 86mm)
(top ear inkstamp) B & G 1911
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.