CD 123 E.C.& M.CO.  Aqua with a slight blue cast
I'm listing this one as a "G" mold, but you be the judge. "G" molds were the earliest insulators out of the same mold that was used to make the "H" mold EC&Ms. As the mold began to wear a very distinct glob of glass began to appear in the front wire groove and excess glass in the wire groove at each mold line increased slightly. These became known as the "H" molds. This insulator has no detectable glob in the front wire groove and little excess glass in the wire groove at the mold lines.
This insulator has a little amber stripe on the right side and a few nice bubbles. The condition is excellent with only a single shallow base chip and some roughness around the sharp base edge. Asking $350 plus shipping.
Shipping will be at actual cost with tracking and $50 insurance included. Additional insurance to cover the full value is optional. I pack well, but can't be responsible for postal loss or damage. I will combine shipping on multiple purchases where practical. I accept money orders, checks or PayPal – NO FEE.