3 1/4" X 4" (83mm X 102mm)
No markings
Picture courtesy Pablo Daniel Sueldo |
3 1/2" X 4 1/4" (89mm X 108mm)
(incuse) F.A.P.A. IND. ARGENTINA
Picture courtesy Barrett Nicpon |
U-1600: Argentina
3 1/4" X 4" (83mm X 102mm)
No markings
Picture courtesy Pablo Daniel Sueldo |
3 1/2" X 4 1/4" (89mm X 108mm)
(incuse) F.A.P.A. IND. ARGENTINA
Picture courtesy Barrett Nicpon |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.
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