To save confusion
The 6BK4 is the HV regulator. plate cap goes to the HV
the 3A3 is the HV rectifier. there should be a plate cap off the donut
the hoz out plate cap goes to the FBT fiber board.
Replacement FBT's often come with HV rect filament windings. Sometimes
a rect socket too. There may be mods with other parts also.
Beware of open stock ! You will probably never find an OEM seears part.
For the cup check for ##'s then find a WORKMAN catalogue on line.
They sold a LOT of repacked parts including cups.
Zeno