6BQ6B Philco by Sylvania low hours/tests like new - broken center guide pin (70ma)
6DQ6A Channel Master JAPAN used/strong (75ma)
6DQ6A Super Radiotron Australia NOS (69ma)
6DQ6B Curtis Mathes hi-fi JAPAN used/good 1960's (60.5ma)
6DQ6B GE branded Amperex NOS/77% 1970 (58ma)
6DQ6B JAPAN NOS 1960's (64.5ma)
6DQ6B Raytheon JAPAN like new 1960's (60ma)
