ST-4648A: Russia
Diameter 10 3/4" (273mm)
(cap embossed) ∞ {Moscow Insulator factory}
Picture courtesy George Sukhoff |
Diameter 10 3/4" (273mm)
(incuse) А2И "ГЭТ in diamond logo" "date" {Moscow Insulator factory}
Picture courtesy George Sukhoff |
Also reported in this style:
Original ST number assignment by Raven Kotlarsky and Steve Coffman