Hi,
If it was an export model, I thought it might have sported a hard wired mains cable. I'm not sure if the American Type approval bods would have insisted on it. No reason why they should, of course. It's just something that crossed my mind uninvited
.
It also seems to have one KT66 and one KT88 in it. Could that cause distress to the output transformer when the wick was turned up?
Cheers, Pete