I will be at the Mid-Ohio Show this year and will provide free advice to all collectors with California insulator questions. I own quite a few Cals, have coordinated a National combined display of Cals and have seen even more.

Do you know the difference between a peach and yellow California color?

Is your California glass color blue, blue aqua, aqua, or sage blue?

The California color looks a bit wonky. Could it be irradiated or heat altered? How do you tell?

I am thinking of selling my oddball Cal, what do you think it is worth? What is the best sales venue?

What is light yellow olive green in California glass?

Why is my scarce-to-rare Cal not worth much?