(!) (Recommended Single) 5881=6L6WGB GE NOS 1960's (72.5ma)
350C Shuguang (sub for 5881 or 6L6GC) (63ma)
350C Shuguang (sub for 5881 or 6L6GC) (68ma)
5881 International Japan black plate NOS 1960's (70ma)
5881 Tungsol rebranded GE used/very good 1950's (74.5ma)
