Question about export transformer (both x101 & x62) plate voltages

[erickompositör72]

So, on the "IIc+ guide for dummies," it lists the x101 plate voltage at "448 - 460V"

Does this mean different amps with these transformers could be anywhere in this range?

Also, has anyone measured the voltage of an x62? Does it also have a similar range, or it is only at 448V?

 

[LockStock]

My July 1984 Mark IIC+ SRX with the X62 PT has a plate voltage of 453V.
Screen Voltage is 452V. Grid voltage is -45.4V, Plate Current 0.038A per Sylvania Single Getter early 70s 6L6 and Plate Dissipation is 17.2W

My March 1987 Mark III SX with the same IIC+-era x62 has a plate voltage of 463V.
Screen voltage is 463V. Grid voltage is -51V. Plate Current is 0.041/0.045A per STR 415 6L6, and Plate Dissipation is 21W.