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.
The code for Siemens & Halske ECC82/12AU7 Welded Large Plates is wrongly interpreted.Here are the correct one:
ReplyDeleteTriangle: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.
Cheers
Thanks a lot for your contribution!
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