Mullard ECC81 / 12AT7 1950's

Mullard ECC81 / 12AT7 1950's
Rare 1950's production tubes from Mitcham and Blackburn factories of Mullard. Typically dating back to 1956-58. All have double-bar square getters, copper grid posts and mint condition. Please indicate the factory of your choice - Mitcham and/or Blackburn - when placing an order.

Quantity in Stock : Out of Stock!
Price : Grade A @ US$59,00/ea ; US$122,00/matched pair
          Grade B @ US$45,00/ea ; US$95
,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.
Grade B - Low noise and microphonics with a section balance typically between 15% and 20%, but may be higher depending on available stock.

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