eBay

FYI: These tubes are measured in autobias mode according the manufacturer data sheet.
More information you find at the end of this describtion

2 x tubes E88CC 6922 Philips Miniwatt SQ quality

matched pair
code: 7L6 ◿1F4
high NOS tested tubes

Flawless test results across all parameters. Like-new condition.
Free of other defects such as grid current, vacuum issues, or noise

Emission = Gm 13,300+13,200 and 13,100+13,000 (100% = 12,500 ±2,500 )
Current = 15,2 +15,1 and 15,0 + 15,1mA (100% = 15mA ±0,8mA)

Produced by Philips

Measuring device used: RoeTestV11.
Measurement mode: Autobias as specified by the manufacturer.
In autobias mode the tube is measured with a constant anode current. This corresponds to the application in the device.
Note: Most tubes offered on ebay are tested with a fixed grid bias voltage. Such a measurement contains a general system error. The desired result in the application is therefore purely random.