[kruc]

I'm rebuilding my 2nd Philco 20. The first is an early cathedral I did 10 yrs ago, this new one is a plain console w/o any scrollwork on the grille. I put the two chassis side by side and noticed several differences between them. The console has a .1 600v paper cap connected between chassis ground and the switched AC lead, soldered to one of the transformer primary lugs. The line cord is cloth type with non polarized plug. I can't quite figure out what the purpose of it is, but I'd imagine if it shorted it may burn in addition possibly making the chassis live depending on which way the plug was inserted into the wall. Anyone seen a 'fix' like this before?
Dave