Is this tube a standard 300b?

Hi everyone,

I think I have decided on which 300b tube I want to upgrade to based on various reviews I have read. I'm just wondering if anyone can confirm that this tube is a standard 300b Western Electric replacement by the specs. Also has anyone here heard this tube in a SET 300b amp?

Regards,

Ed

KR Audio 300b Baloon Tube

Maximum Plate Voltage 550 V
Maximum Plate Current 120 mA
Plate Dissipation 50 Watts
Va 450 V
Ia 100 mA
Vg -90 V
Transconductance 6.2 mA/V
Amplification Factor 3.9
Filament Voltage 5 V (DC/AC)
Filament Current 1.2 A