56 Philco

[Don Lindsly]

Application notes indicate 83uuf, 5% between terminals 1 and 2 and 24uuf, 5% between 3 and 4, plus 8uuf allowance for varying tube and circuit capacities.
Three and four are transformer primary.

These values can vary depending on the actual transformer used. Knowing more would narrow it down, otherwise that's a start. The secondary capacitance is always more than the primary.

Make sure the CRT mount and coating are grounded.

Don