Svetlana EL34s - NOS or reissues?

[1000RPM]

can anyone tell me if these Svetlana EL34s are NOS Svets, or reissues from New Sensor?

 

[barrymidd]

They look like NOS but fakers are clever. You will know if they start degrading in year.
The best EL34s I ever had were badged Telefunken. I put them in an Audio Innovations Series 500 and they transformed the amp.

 

[mozza]

I got mine from Watford valves and have been delighted with them, FWIW.

 

[TheDecameron]

my svets from watford years ago have brown bases

 

[Tony L]

Mine have brown bases and the 'winged C' logo.

Tony.

 

[1000RPM]

Brown cases on these too (although looks black in pic)