3 1/4" X 3 1/2" (81mm X 88mm)
(skirt inkstamp) NP-54
Picture courtesy Bob Berry |
U-2237: Canada
3 1/4" X 3 1/2" (81mm X 88mm)
(skirt inkstamp) NP-54
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.
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