Four more Russian (or Soviet Union) insulators. Left to right CD 570: peach color "KV/JL/T" inside a shield outline; 1976 Lviv with an insulator symbol; CD 570"EKO" inside a circle, and a Lviv CD 522.5 HC18A (NS18A) 219. Close-ups will follow.

Apparently the EKO and the KV/JL/T CD 570 insulators are from Estonia, refer to [id=274044225]

Klaas Vabrik / Johan Lorup (Johan Lorup Glass Factory) / Tarbeklaas which may mean Glass Stone (?)

[IFONA CD 570, ???, 522.5]