Matched 1961 RCA 12AX7A/Ecc83 vintage tube-sold

Matched 1961 RCA 12AX7A/ECC83 low noise,shortplate ,Testing at NOS levels for sale.These tubes(slightly used) are from vintage equiptment but are testing at 87%.

Date on tubes:61-17
manufactured in 1961 on the 17 week for WURLITZER ORGAN Co. by RCA
Tubes were test matched with a Calibrated Mercury 204 and Precision 912 tube tester and read at 87% on both tube testers.A new 12ax7 tube tests at 85% on these testers.
Minimum Good on tester is 50%.Tubes revealed no SHORTS and GAS leaks as well.

I am now playing these tubes in my tube amp and they sound fantastic for 50 year old tubes.Current production tubes are no match to these.

Asking RM 550 sold only for a matched pair. Call 017-2608383
I have another 2 available with similiar readings