This might be interesting....
 

While looking on the web for the page with the "crt clock, (which i found), i found a site that sells small crt's INCLUDING 2AP1'S, ETC. this might be of some use to somebody.

go toSphere's cathode ray tube-crt page.

scope clock
 

i have several of those crt clocks around the house here,neat kit to build,i even have one running a P5 blue phosphor,(5LP5)
terry