Voltage selector?

[Mrmot]

Could anyone please tell me how often did M/B put voltage selectors on mark amps (espec. III), i remember seeing one IIC+ with a voltage selector..
I'm asking because maybe one day i'll import a mark III head from the states so just wondering how rare/often are they...
thanks

 

[Boogiebabies]

Probably more common than the IIC+. There were 13,556 MK III's made so your probability in much better to find an export tranny.