[1BionicEar]

Quote from a popular online tube retailer:

"This is the original 1950s RCA black plate that will never be duplicated.... Warm blackplate sound with a nice top end."

I have 3 matched pairs of 1958 RCA 6189 12AU7 triple mica blackplate tubes from 1958 for sale.

Pair 1
Fair to good logos with 58-43 dates
Tested 89/90 and 89/90 where 70 is the minimum score.
SOLD

Pair 2
Fair to good logos with 58-43 dates
Tested 89/88 and 90/89 where 70 is the minimum good score
SOLD

Pair 3
No logos or dates visible
Tested 88/88 and 88/86 where 70 is the minimum good score
SOLD

No PayPal fees and $3 USPS 1st Class shipping to USA.

Please see my other listings.  I will combine shipping and also consider discounts for purchase of multiple items at the same time.

Feel free to ask questions.

Thanks for looking.

[1BionicEar]

Pair 3 is SOLD.

[1BionicEar]

ALL SOLD!

See my other listings.  More to come.

Thanks.