Was at an estate sale yesterday of an electrical engineer. He had basement lab with a lot of test equipment and parts. Found a couple of flyback transformers that appear to be from a 1960's color tube set. They are both marked 51-131B. Does anybody have any clue what these are used in?

It does appear to be a color flyback to me, but I've never seen a fly with a blue tire before so I haven't got any idea of who made it.

Tom C.

Packard Bell. I would gladly buy them as I have several sets that use that flyback.