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(!!!!) (Best Pair #1) 6B4G Raytheon NOS 1940's separate plates, 1 branded Philco (90ma and 91.5ma)
(!!!!) (Best Pair #3) 6B4G Raytheon NOS 1940's - 1 tube branded Tungsol - same build - separate plates (82ma and 83ma)
(!!!!) (Pair Pair #2) 6B4G Raytheon NOS 1940's - 1 tube branded Tungsol - same build - separate plates (86ma and 83.5ma)
(!!!) (Best Single) 6B4G Raytheon NOS 1940's (92ma)
(!!!) 6B4G Tungsol NOS 1940's (81ma)