Old Muntz TV for sale Locally to me, Should I pick it up?

[Electronic M]

No non-polarized lytics are not used for filter caps in these sets (sometimes single section non-polarized were used to couple the yoke and allow centering DC to be added).

If there is a metal can under the cardboard then there were negative terminals on it's bottom (they may have snapped off when it got busted off its wafer). If there is no metal can or terminals on the cap and just wires out the bottom then there has to be a negative lead if it is a multi section cap.

You need to get the schematic and trace things out if you can't make sense of the wiring that's there.