I have several tubes for the 69. They were supposedly working spares for my 69, but the RX is gone. Is anyone interested in them? 6D6 (3) 6C6 (1) 6B8 (1) schematic shows 6B7, but owner has marked it 6B8...maybe mistake on schematic or interchangeable tubes? I also have the rare and expensive 80! The 69 uses five 6D6 ! Wilson W4BOH