U-3056: Italy
2 3/8" - 3 1/8" - 3 1/4" - 4" X 3" (60mm-79mm-82mm-104mm X 77mm)
(crown inkstamp)
Picture courtesy Dave Dangora |
2 3/8" - 3" - 3 1/8" - 4" X 2 7/8" (60mm-77mm-81mm-103mm X 72mm)
(top skirt inkstamp) . .
Picture courtesy Dave Dangora |
2 1/8" - 3 1/8" - 3 1/8" - 4 1/8" X 3" (55mm-79mm-81mm-105mm X 78mm)
(top skirt inkstamp) CERAMICA / LIGURE
Picture courtesy Dave Dangora |
2 3/8" - 3 1/8" - 3 1/8" - 4" X 3" (60mm-78mm-78mm-102mm X 77mm)
(top skirt inkstamp) / 1-63 {Verbano}
Picture courtesy Dave Dangora |
This small power insulator is a paderno style.
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.