3 3/4" X 3 3/4" 95mm X 95mm)
(dome inkstamp) RIG
Picture courtesy Bob Berry |
3 3/4" X 3 3/4" 95mm X 95mm)
(dome inkstamp) RIG
Picture courtesy Bob Berry |
3 3/4" X 3 7/8" 95mm X 99mm)
No markings .
Picture courtesy Bob Berry |
U-2261: Germany
3 3/4" X 3 3/4" 95mm X 95mm)
(dome inkstamp) RIG
Picture courtesy Bob Berry |
3 3/4" X 3 3/4" 95mm X 95mm)
(dome inkstamp) RIG
Picture courtesy Bob Berry |
3 3/4" X 3 7/8" 95mm X 99mm)
No markings .
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators 1986 Supplement by Marilyn Albers & Jack Tod.
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