My first vintage color set

[bigaudioal]

Thanks for the comments guys. I believe it is the deluxe chassis, but now know how to confirm once removing the plate over the PCB chroma section.

I believe all three guns on the 21AXP had good cutoff response on Kamakiri's CRT tester. I have not tested myself, but was there when he tested it on Saturday and it looked good. CRT was rebuilt in the 1970s and I believe NEVER used after rebuild.