Help me out and please be kind. . .

This insulator has a 61 with 11 dots proceeding. 61 + 11 = 72.

That is the best my thurd graid edukashon kin cipher.

Problem is. . .thought that Armstrong ceased production in 1969. . .IT DID! BUT O/C KEPT PRODUCTION USING THE ARMSTRONG NAME UNTIL 1973 OR SO!

old dawg ^..^

https://www.glassbottlemarks.com/whitall-tatum/

MYSTERY SOLVED!

THANK YOU MATT!!!!