(!) (Single) 6550 Tungsol black plate used/good 1950”s – guide pin broken off (123ma)

6550 Tungsol black plate used/good 1950”s (2 side getters and 1 top getter)

guide pin on base is broke off – see photo

123ma

Gm=9600

Tested on Amplitrex AT1000

Good used mA range = 110-130mA

Good used Gm=9,000-10,000