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You'll want to replace the selenium with a silicon diode and put the 50-75 ohm resistor in series with it. Replace the electrolytics by disconnecting the original can and putting new ones which will be much smaller under the chassis. May need some terminal strips. The striped black plastic caps will be leaky and need to go, also. I would leave the resistors and mica caps alone. Transoceanics have a very complicated filament supply circuit that with resistors provides just the right voltage to each filament along with proper bias. You could check each resistor with your ohmmeter and if within 20% leave it.
These one-volt tubes have very delicate filaments. Once it's operating, never turn the set off and then back on quickly. Also never never yank a tube while it's operating and then plug the tube back in. The voltage can build up beyond what it is supposed to be and blow at least one tube when plugged back in.
Before tackling a TO for the first time I'd search on line for a while and read all I could about restoring your particular model. There is a lot of information out there.
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Reece
Perfection is hard to reach with a screwdriver.
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