U-2259: Poland
3 7/8" X 4" (95mm X 98mm)
(dome ink stamp) {Ćmielów}
Picture courtesy Bob Scafe |
Ć in a triangle is a trademark of Ćmielów factory since 1920. This insulator was made circa 1930 for low voltage power distribution. Thanks to Michał Okulicz-Kozar yn for this information.
U number assignment by Bob Berry April 2016.