Anyone have information on 300B tube from silvertone?
Which factory produce this tube, year production and price.
Any idea or experience on the sound that produce from this tube?
Given the vintage if there really is a Sears Silvertone 300B it would almost certainly have to be a Western Electric (USA) or Northern Electric (Canada). Far more likely though that it is a fake if someone is trying to sell you such an animal - be careful!