I have an old white tube 60mm F415 (f6.9) refractor with that exact same stamp. It's a 0.965 focuser scope probably 60's or early 70's vintage. Works pretty good. It has a doublet objective with a thin clear plastic washer spacer to separate the two lenses. Seems to be single coated. Does not appear to be an expensive piece of equipment.
I always thought it was an E for Edmund. Now that you mention it, it sure does look like a K. Any more info would be appreciated.
edz
I always thought it was an E for Edmund. Now that you mention it, it sure does look like a K. Any more info would be appreciated.
edz
