[Boater Sam]

To be in the modern idiom, most would say a Y and an X types respectively should be fitted.
But if the radio was for my collection, not to be sold on or given away, I would keep the originality with the TCC Ms. They have lasted this long and not killed anyone or blown up.
But then I don't mind if one of my radios goes wrong and I have to repair it at a later date. I also know its a non isolated chassis and treat it with respect.
Its your radio, your judgement call.
It may be an idea though to put a new extra Y type in the aerial lead to prevent any possibility of the long wire becoming live, there is no cap in that position. If the one across the mains shorts it may take out the chokes/switch, does it really need to be there at all?