U-1775: Switzerland
3 3/4" X 4 7/8" (94mm X 124mm)
(side ear) / 5092
Picture courtesy Bob Berry |
3 5/8" X 4 3/4" (92mm X 121mm)
(skirt inkstamp)
Picture courtesy Bob Berry |
3 3/4" X 5" (92mm X 127mm)
(skirt incuse) / 5092
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.