Newest Philco AA5?

[bgadow]

I was playing with a couple Philco AA5's earlier this year, both a little older than this one (I think the one was a '63?) and noticed the Japanese sourced, Philco-branded tubes. Odd, I think, that the NOS Philco-Ford tubes I have from that era are made in the US. I've noticed the same thing with DuMont/Emerson stuff. I wonder if this could possibly be a tariff issue? Perhaps if the tubes were incorporated into a radio they weren't subject to as high a tariff as if they were sold outright? Just an idea.