ValvoECC 33usedValvo ECC 33 Rare 6SN7/Pair/ReducedI have a very rare pair of 6SN7 Tubes. They are labeled ECC 33. These are stamped Valvo but believed to be Mullard Blackburns by the Date Stamp. These are NOS. They are in White Tube Boxes.200.00

Valvo ECC 33 Rare 6SN7/Pair/Reduced

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Condition
9/10
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Ships fromSaint Louis, MO, 63141
Ships toUnited States
Package dimensionsunspecified
Shipping carrierunspecified
Shipping cost$20.00
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I have a very rare pair of 6SN7 Tubes. They are labeled ECC 33. These are stamped Valvo but believed to be Mullard Blackburns by the Date Stamp. These are NOS.  They are in White Tube Boxes. 

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