I received this inquiry for which I couldn't answer and I was hoping someone might have the answer, perhaps Dave?
Willis
- - -
Here in Southern California, there are several cities which utilize the "Mission Bell" streetlight developed by General Electric back in about 1965-'66 for the Mission Viejo Company. When Mission Viejo, CA was constructed, the builders wanted a unique street lighting fixture. I believe that the original lamp used was a 400 Watt mercury vapor; currently they have 250 Watt sodium vapor bulbs inside.
I please was wondering if you might know what GE designation was used for this style; did it have a "Form" title, like the more common "cobrahead" fixtures?
When they first were introduced back in the mid-'60s, they originally came equipped with a disc-shaped semi-cutoff lens that was 50% shaded & 50% opaque white, but all of them have since been refitted with a sag glass, or flat pane like those on regular "cobra heads". What was the original disc lens referred to as, and why was it discontinued?
Here is a picture of one nowadays:

Thank you very much, Cindi Andersen