The Sylvania are the rare GOLD PIN tubes.
I tested only emmisions and verified zero leaks but never heard them in an amp.
Internal construction of both tubes is very similar but there is a slight difference: one has a black plate (code JCW) and one has shiny silver metal plate (code AJ).
I don't know the exact dates but they should be vintage tubes from the late 50s or 60s.
Print is faded on both tubes. Original boxes are in good shape.
In addition, I am also selling a pair of WE 408A, both have code 5839.
Tubes are like new. Same for the original military boxes.
Price is $45 shipped in the US.
I can ship worldwide at extra cost.
Edited by Ori - 10/3/10 at 9:06am





