[keithw]

The 6vdc "A" battery will draw about 1 1/4 amps but the "B" and "C" will only be milliamps. Try firing it up with batteries first. A stack of 9 volt batteries for the "B" and "C" will work fine and last a very long time. A six volt sealed lead acid for the "A" will light the filaments for hours.

Short pin 01A tubes show up on ebay every so often and you might try a WTB on the forum here. With even one tube you can step through and test each stage with a minimum amount of test equipment.

keithw