Okay, so I bought this this morning. It is an old console that says Ambassador. That's all it says, no model number nothing. Who has more information or has seen these before? I paid $5 for it, so I am hoping it was worth it.
Yeah, you made your money and then some, but that aspect belongs in the dollars & sense section. It looks like real easy piece to repair and enjoy or to pull and use as a stand-alone amp.
6BQ5s have raised seams at the top? If they do they are Mullards and you have really scored.
On the VERY bottom of the Tube, it has a 7 etched in the glass. Printed on the Glass is rx3 a9d in black, and then 038 in white. I REALLY have no idea what I am doing or looking for.Check near the bottom of the tube to see if there are two lines of usually three letters or symbols. This will tell you exactly where the tube was made.
It is just one of those low production orphans and likely was a mail order catalog piece if you are distance from the middle of the continent of NA..