Price is for two seemingly NOS or very little used tubes. Those Standard tubes were made in England in the 1920s and 1930s. Very hard to find triode from the golden age of those. The sound is reported to be very ,very good.
Tested VERY GOOD and MATCHED as follow:
Ia = 0.7 mA | S = 0.4 mA/V
Ia = 0.7 mA | S = 0.4 mA/V
Test under: Uf = 2.0V, Ua = 130V, Ug = -1.5V
Where 100% is Ia = 0.9 mA
Shipping will be DHL or UPS Express Worldwide. Other shipping options available on request.