[codefox1]

Slow down, batteries may be the least of your problem. Plenty of stuff on making 90 VDC qnd 1.5 VDC supplies. Beware that ancient wax capacitors can and almost are always leaky, and resistors are many times way out of tolerence, usualy high. It is rare in my humble opinion to find portable tube filaments blown without probable cause easily detectable with nose and eyes. Here is the closest I have access to:

http://www.nostalgiaair.org/PagesByModel...013312.pdf