All have top markings 6SL7WGT with rectangular getters
All Have Black Plates. Browm Bases Micanol
All were tested on TV-10D Transconductance tester
Tester minimum readings 1000 uMhos. Readings ( T1/T2)
JAN CHS Boxed 12-58 Gold Silkscreen (1927/1980)
JAN CHS Boxed 7-59 Gold Silkscreen (1793/1813)
JAN CHS Boxed 12-58 Gold Silkscreen (1840/1900)
No Marking. No Slkscreen (1893/1927)
JAN CHS 519 B5B Green Silkscreen (1173/1460)
JAN CHS White Silkscreen (1933/1913)
Missing Guide Lug 709 K6B Green Silkscreen (1830/1767)
JAN CHS Missing Guide Lug 434 Green Silkscreen (1433/1780)
I put black markings on the 2 tubes base's that had missing guides. To use these 2 tubes just line up the black markings with the tube socket guides detents. Take great care to ensure that they are lined up
correctly.
Please Use Ebay Ask Seller Questions Anytime
Local Pick-Up Available By Appointment
I do combine items when and if possible or practicalSome Variants Of This Tube Are: CV569 5691 ECC35
Having collected ~100000 tubes since 1955,
I just can not remember detailed history of my tubes. However,
I can and do test and FULLY
GUARANTEE all my tubes
( Including NOS & NIB ) that I offer for auction on eBay.
I usually ship immediately upon receipt of payment.
Enjoy your bidding!
LOCxGUGA