This listing is for 1 very lightly used tube. This is a vintage dual triode preamp valve made in the Ulm factory in Germany. It features a dual stage O-getter, a diamond shape stamped on the bottom, and gold pins.
The tube has been tested STRONG and closely BALANCED with the following values:
Testing was conducted under the following conditions: Uf = 6.3V | Ua = 90V | Ug1 = -1.3V
Good starts at: Ia=8.5mA and 100% is Ia=15.0mA
This is a QUITE RARE TUBE!
Shipping via registered airmail with tracking number. Import fees for U.S. buyers are included in the shipping cost under the new tariff regulations. Other methods available upon request.