This little "spaceship" is headed in my direction... Top cable groove, nice green glass and the older original JSN embossing on the side of the dome. We have CREBS, maybe this could be considered as being a "CREN" (CRown Embossed Niemen) This insulator was produced before WWII, between 1930 and 1939, when the factory was still located on Poland's territory. Which was "annexed" by the USSR after the War.

This insulator appears to be the same type as the one shown here: [id=267054467] apparently a valiant survivor of the ravages of WWII.

It also appears in this photo, the second from the right hand side. [id=262213790]

and is the middle one in this photo [id=262566115]

Skirt diameter 95mm (3.75 inch)

Recently received this cryptic message as a feedback for another related item:

"Один из лучших покупателей "