One Tested 7247 12DW7 GE Audio Receiver Preamplifier Vacuum Tube 

Country of origin:   USA

Production era: Estimate  1960s

Model:   7247  12DW7  

Manufacturer:   GE

Type:   Preamp  

Plate type:  17mm gray ladder vented

Filaments:  standard

Base type:   9 pins

Spacers: two

Getter frame:  halo wire

Getter flash:  top   

Glass:   clear

Stencils:  moderate wear

Condition:   very good

Usage (estimate):   nominal

Quantity:  1

Please review the photos for more detail

Test results:

       Excellent to very good balanced test results for Gm:  40 / 64

       For Gm, the suggested minimum is:  32 / 55

Shorts: None detected

For testing, a calibrated Military TV-7 tester was used

Compatibility: Suitable for vintage tube-based equipment, ideal for use in audio amplifiers, power amps, and general tube equipment

The tubes will be carefully packed to ensure safe shipping

Estimated delivery time within the USA is 3 to 7 business days

Standard shipping service is US Postal 1st class

Shipping is combined when applicable

Please feel free to contact us if you require any additional information