This phone is a very mysterious item. The first one I saw of these was sent to me by another collector for identification. I could only guess it was a one off for some reason. Then, a year or so later, this one popped up. Seeing two identical colors leads me to believe they weren't an accident. My best guess is one of two possibilities. Either they were a custom run for a large company that wanted special order colors for their building or they were a test market color that just didn't catch on.
These had to be made early on because both I've seen have the early flat ear piece. The color name "Honeycomb" is something I came up with only because it best described the color of it. It's that translucent yellowish-ivory beeswax color. Both have turned up in the USA so I believe it's a North Electric product.