[Hallicrafters] Re 7591 Tubes Needed

[Duane Fischer, W8DBF]

Do any of you have, or know where I can get, a matched pair of 7591 tubes? I am
told the Russian tube is about half the cost, but of questionable quality. Do
any of you know the facts, not speculation, on this issue?	
	
Thanks.	
	
Duane W8DBF