CD 783: England
4 3/8" X 3 3/8" (111mm X 86mm)
No embossing
Picture courtesy Tommy Bolack |
This is a very early insulator glass insulator that is similar to the CD 630 Bright's patent.
Note this was originally assigned as CD 631 but has been moved for consistency to the threadless range by Dario Dimare July 2020.