Here is a beautiful pair of the highly-regarded Valvo 6201, premium 12AT7, tubes. Tubes have the rich blue Valvo shield logos, small halo getters, and gold pins. Etched factory date codes are D4D1 and D4D2, which means they were manufactured only 1 week apart, during the 1st and 2nd weeks of April, 1964 at the Hamburg, Germany factory. Tubes "flash" when powered up.
Tubes test 103/103 and 103/103 on my Sencore tester, where 70 is the minimum 'GOOD' reading. Tubes were negative for shorts and grid leakage, and they passed the life test.
$175 for the pair. I also have a second pair available.
Shipping is $8.50 for USPS Priority Mail to USA with $175 of insurance.
Contact me to discuss the possibility of International shipping.
Let me know if you have any questions. Thanks for looking.
