100% New Item
Old stock. The tubes are new and never used
"Reflektor" factory
Same Date codes from 1970's (from same batch)
Tested and Measured Pair 6P3S (6П3С) Tetrode
We test our tubes from this type on High-End Military Tube Tester: L3-3
Measured parameters attached to each tube, difference < 3%
on the photo shows an example of the tubes with parameters