The site http://www.insulators.ru/ previously posted, has another logo / marking that appears to be the very same one that appears on someof the CD 247.5 insulators in gold amber glass.

The amber CD 247.5s look like this one (which does not show the embossing).

[id=133646796]

The date can be 1963, 1964, and possibly 1968.

The center letter is the Cyrillic for the letter "I" and the "3" is the letter "Z" .

Transliterated into English this "AH3" would be pronounced as "Armaturno - Izolyatorniye Zavod"

This "AH3" is a fairly common corporate name, it also appears in Tula AIZ, Novosibirsk AIZ, Yuzhnouralsky AIZ, and Slavyanski AIZ (a now defunct company).

TAIZ: http://home.tula.net/taiz/firm/

NAIZ: http://www.naiz.ru/

YuAIZ: http://www.aiz.ru/

[IFONA]