U-1692: Uruguay
2 1/2" X 3 3/4" (61mm X 92mm)
(ear top inkstamp)
Picture courtesy Bob Scafe |
2 3/4" X 3 7/8" (67mm X 95mm) .
(ear top - inkstamp) ECL .
Picture courtesy Bob Scafe |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.