AllOriginal 1578 Tubes and Only Original 1578 Tubes has design features:
Mica plate has two ledges. Steel brackets.
If you find some Russian 1578 or 6N8S Tubes with these design features, it is Original 1578 Tubes, even without logo 1578. Most likely the marking was erased.
If you find some Russian Tubes with logo 1578, but without these design features, it is NOT Original 1578! It is falsification, fake and deceit!
You can find large photos in About me page:
http://members.okay.ge/ws/okayISAPI.dll?ViewUserPage
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