One pc of rare genuine EL34 audio amplifier tube with "Valvo" branding, made by Mullard Blackburn (code: Xf3/ B3K4), single O-getter and dark bakelite base with hole in guidepin. New old stock. Shipping worldwide from Germany via registered air mail, PayPal welcome. Please have a look also to my other items for more audio related parts and tubes (E80CC, E88CC, EL84, capacitors like Mullard Mustard, Wima Durolit, Siemens / Klangfilm Karbowid & Allen Bradley resistors, etc.).

ID: Box 51