http://www.ominous-valve.com/russtube.html
Russian Tube Manufacturer Identification
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Russian Tube Manufacturer Identification
by EWBrown » Thu Feb 12, 2015 9:02 am
Real Radios Glow in the Dark
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EWBrown - Insulator & Iron Magnate
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Re: Russian Tube Manufacturer Identification
by Geek » Thu Feb 12, 2015 3:09 pm
Those old Reflektor with the "OTK" in the diamond are going for as much or more than RCA black plates! 
-= Gregg =-
Fine wine comes in glass bottles, not plastic sacks. Therefore the finer electrons are also found in glass bottles.
Fine wine comes in glass bottles, not plastic sacks. Therefore the finer electrons are also found in glass bottles.
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Re: Russian Tube Manufacturer Identification
by soundbrigade » Sat Mar 07, 2015 1:11 pm
<OTK> is a sort of quality marking like UL, CE or VDE, not a manufacturer's logotype.
Magnus
"It is always more difficult to fight against faith than against knowledge."
"It is always more difficult to fight against faith than against knowledge."
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Re: Russian Tube Manufacturer Identification
by EWBrown » Sat Mar 07, 2015 9:40 pm
OTK stands for Oтдел Техническово Контроля or "Technical Control Bureau". Does not mean Old Time Kommies 
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