SIEMENS ECC82 / 12AU7 Welded Plates

Siemens & Halske ECC82/12AU7 Welded Large Plates 1953 
An ultra rare collector's item! Made by Philips Copenhagen factory in 1953. All have the same date code : Triangle 6  K6B. These have welded large plates with D-Getter. Mint in original boxes. These can make a Matched Grade-A trio or a pair and single. The Amplitrex AT1000 test scores are as follows :
9.6mA/10.0mA, 10.2mA/9.6mA and 9.2mA/9.2mA.

Quantity in Stock : Out of Stock!
Price : Grade A @ US$140,00/ea ; US$295,00/matched pair

Grade A - The best in the stock. Lowest noise and microphony with the tightest balanced sections we have available. This is typically 10% or often tighter given the large volumes of our stock.


  1. The code for Siemens & Halske ECC82/12AU7 Welded Large Plates is wrongly interpreted.Here are the correct one:
    Triangle:Philips Copenhagen
    6:Date code,August 1953
    k6:Type code for ECC82
    B:Change code for K6 production series.
    Philips Copenhagen shut down around April 1954.


    1. Thanks a lot for your contribution!


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