Uh, a "wirewound resistor" ?
Was it mounted on a tie strip parallel to the driver tube where the plate cap's wire connects?
If so, this was the plate choke. An Ohmite type Z-28 works for that one. Don't think there's a specimen here to serve as a "photo model".
And if there is no parasitic choke, made from a wire with a few turns around a 47-ohm resistor, your Skipper may have had a tiny ferrite bead slipped over the wire to the plate cap. If the bead is still there, it will do the job. Until it overheats, cracks in half and disappears.
If yours already did this, there will typically be no trace that it was ever there in the first place. Winding 4 or 5 turns of #22 or #24 wire around a 47-ohm 2-Watt resistor will take its place, and probably last longer.
My experience has been that the driver tube will go nuts and smoke the driver plate choke if it oscillates. If the original ferrite bead is no longer there, the tube is likelier to misbehave this way.
Palomar would use these tiny ferrite beads, slipped over the plate-cap wire in place of the more-typical coil-on-a-resistor choke coil. They worked okay until the first time they got hot, would crack and fall off. Forever.
And it seemed like such a clever idea when they first started doing that around '77 or '78. Until they started falling off the wire and disappearing. The coil-on-a-resistor "parasitic" choke just holds up better.
73
73