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Although the photos are good, I would like to have seen a closeup of the base end. There's something odd.
Some aluminized CRTs required an ion trap because they only applied enough aluminum to act as a mirror and not enough to stop the ions. For example the 12LP4C. It was intended to make them brighter.
Two ion traps is weird, if that's what they are.
I haven't seen that type of socket on a 10BP4 before. But, there are a lot of sets I haven't seen. The wires are stretched tight and it looks like there is barely enough slack to remove the socket.
Since it was aluminized it probably wasn't done by a Mom and Pop operation and probably has been rephosphored as well.
I wonder if this was a VDC rebuild? I seem to remember on their old web site that they had a standard gun they used for B/W CRTs and it would require that you rewire or change sockets for some CRTs that they rebuilt.
I see that the seller answered that the ion trap magnets have no effect. That seems odd also. My experience with a 12LP4 that had a straight gun was that adding an ion trap magnet made it impossible to adjust properly. I guess that could be why there are two, one cancelling the other, but they would still have an effect.
It's tempting to bid on this just to find out what the heck it really is. I hope someone on VK gets it so we can get a report.
John
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