Telefunken
EF804S
O-Getter
Diamond Mark on Bottom
Vacuum Tubes
Made in Germany.

This tube is labeled as Siemens.
Diamond mark on bottom indicates it is made by Telefunken.

Fully tested by calibrated Hickok 539C tube tester
with no shorts, leakage or gas.

Measurement: 
2310
where minimum good value is 1260

Strong tube!

I will gladly combine shipping upon request.

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The tube(s) in this sale include a 30-day satisfaction guarantee.
I strive to ensure that every buyer has a completely satisfactory purchasing experience.
If you are unhappy with your purchase for any reason, you can return the item for a full refund.

Please contact me directly prior to opening a return or leaving feedback.
I will almost always reply at least within 24 hours to remedy the situation for you with direct communication.