Packaging : NEW white tube boxes. This set was tested and certified by RoeTest V11 tester with the following result. Measured transconductance (GM): 1.31 mA/V - 66% (100% = 2.0 mA/V). Measured plate current (IA): 2.29 mA - 76% (100% = 3.0 mA).
NO shorts, leakage or gas. Curve trace is also included in the original RoeTest report.