Hi, I'm new to the list, was wondering if anyone could help me with a Compucorp 140 (Statistician) nixie tube calculator I found the other day. The calc is missing a couple of items. I was wondering if anyone has a power cord (fits 1 in dia socket with 3 pins in equilateral triangle on 3/8" spacing), 'chg sign' key, 'reset' key and the key with 2 bell shaped curves on it (or a complete junk unit). I would be greatful for any help Mitch Billian