For everyone's future information, I found a replacement globe. I got it through Beacon Lighting in Sunnyvale as a special order (not something they keep in stock), but you can probably order on line as well. The globe outside our front door is 12" in diameter, and the replacement is from the American DeRosa catalog, model G311. It's a 12" opal glass ball with a 5 1/4" lipless fitter (opening). Cost was about $60.00. Just got it (took about 2 weeks) and it looks great; just like the original. They also have acrylic version that's a little cheaper, but the woman at Beacon, who really seemed to know about Eichlers and Eichler esthetics, said that it would look very different at night with the light on, so we went with the glass.
I have recently purchased a 1970s modern home in New Mexico The orginal lights are multi-globes. One fixture has 6 trailing,8 inch globes. The other fixture has 5 globes, 8 inch to 12 inch globes. I believe these are Eichler, as the owner was from California; Curious. Great lights.p>