$ 37.99
(!!) (Best Single) 6U8A Philips by Sylvania NOS 1986 (22.4ma and 12.2ma) (Highest mA and Gm)
$ 19.99
(!!) (Single) ECF82=6U8 Toshiba Japan branded Telefunken NOS 1964 (14.2ma triode and 9ma pentode)
$ 29.99

