EXTREMELY RARE NOS NIB TELEFUNKEN NOS! ... these are the good old ULM, W.Germany production made in 1952 which will never be made again... "...Extremely warm and neutral sounding rectifier. Characterized by a compelling detailed accurate neutral sound reproduction. "Built for Longevity" the TELEFUNKEN < > DIAMOND Full-Wave Neutral Vacuum Rectifier that lasts 3 times longer than other 6V4's !..." The BEST Full Wave Telefunken Rectifier ever made in the World!
Labelled for SONOTONE and new in original retail box!
Purchase 2 tubes for a balanced & matched pair
DIAMOND-BOTTOM BETWEEN THE PINS - MADE IN ULM, on the Danube, WEST GERMANY
100% NOS
Holy-Grail of the 6V4 Rectifiers 
