I don't have a set that could use a 15GP22, but I'm sure someone here does. 2 bids so far, 6 days left, current bid a whopping $10. I'd expect it to get well above $1k before the 11th rolls around, if of course, this isn't a scam. Not associated in any way.

Here it is! (http://www.ebay.com/itm/RCA-CT-100-15GP22-Color-Picture-Tube-1954-Tested-/140602442172?_trksid=p5197.m7&_trkparms=algo%3DLVI%26itu%3DUCI%26otn%3D1%26po%3D LVI%26ps%3D63%26clkid%3D2554878216077476567)

1 minute too late! hehe

http://videokarma.org/showthread.php?t=252063

I saw that, darn! Go ahead and delete this if needed.