1 pair 6211 ECC802S Telefunken <> ribbed plates NOS nicely balanced same code
Test values
Tube 1: 6.0/6.0mA 4.0/4.0mA/V
Tube 2: 6.1/6.0mA 4.0/4.0mA/V
4.6/4.6mA & 3.6/3.6mA/V = 100%
Tested on Metrix U61C
Factory code tube 1: 252551 U. ub.01 on top of the tube 097
Other print on tube: 0970000
Factory code tube 1: 252551 U. ub.01 on top of the tube 096
Other print on tube: 0960000
I do combined postage