According to Swedish authority on the subject - that is, the people involved in making them, Swedish tubes actually weren’t very good.. as I understand, they were made as equivalents or “copies” of some American 6SN7 types (RCA is mentioned) and were made to have extra long life (10000 hrs) and extra sturdy to withstand being near the cannons they were meant to control.
However, the overall quality was lacking, and according to this thread (http://www.hififorum.nu/forum/topic.asp?ARCHIVE=true&TOPIC_ID=59746) Ingvar Lund at the Swedish radio museum in Gothenburg apparently once mentioned that they at least had one redeeming quality, and that was that they could be very useful in the Swedish winter; if it was icy and slippery outside, grab a few tubes, toss them in the ground and step on them. Kick around the broken glass and you don’t have to worry about slipping any more!
In short, they are not worth the asking price
(unless you really REALLY want to own one of those tubes of course, they are pretty rare after all)
More info:
http://www.veteranklubbenalfa.se/veteran/09q2/090611.htm
http://www.sm7ucz.se/Kanongrej/Kanongrej.htm
(all links in Swedish btw, but google translate should be helpful) Edit: added emojis lost in transfer
Last edited:
) that he was bringing with him, I seriously doubt he can afford to pay anything for a healthy kidney... 
