5 3/4" X 4 1/2" (144mm X 115mm)
(skirt inkstamp) ANSI 55-4 COLOMBIA {Lapp Colombia}
Picture courtesy Bob Berry |
U-2737: Colombia
5 3/4" X 4 1/2" (144mm X 115mm)
(skirt inkstamp) ANSI 55-4 COLOMBIA {Lapp Colombia}
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.
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