U-1254: Poland
2 7/8" X 4 1/8" (71mm X 104mm)
(dome incuse)
Picture courtesy Bob Berry |
2 7/8" X 4 1/8" (71mm X 104mm)
(dome incuse) {Zapel}
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.