[Tom]

A friend of mine just brought over a pair of N.O.S. tubes. They have a
spray coating and are labeled 4046A but have no manufacturer's name. It
is a medium size "ST" shaped bulb with a grid cap and a British (?)
style 5-pin base. Is anyone out there familiar with it? Is there much
demand for it? What do they usually sell for?

Thanking you all in advance,
Tom