2x TESLA ECC802S (=E82CC 6189) lk Telefunken, 8/1965+9/1971 Date Codes, 100%+, 299+300

You are bidding on two pieces of TESLA ECC802S (12AU7WA, E82CC) tubes in very nice condition. These are industrial-grade tubes made for army or aerospace use, and other demanding applications. Construction-wise, they are similar to the exceedingly expensive Telefunken ECC802S tubes, and some like these even better. Both tubes feature non-corrosive pins, yellow prints, 32 factory codes, large ribbed plates, copper system and grid posts, and large halo getters. Date codes are 8/1965 + 9/1971, same construction on both. One has some yellow selection stamp between pins. Both tubes look pretty nice (please see photos), and test as NOS/100%+: Tube 1 (299): Ia1= 04.80 mA / Ia2 = 04.60 mA, S/gm1= 01.10 mA/V / S/gm2= 01.30 mA/V Tube 2 (300): Ia1= 03.90 mA / Ia2 = 04.90 mA, S/gm1= 01.30 mA/V / S/gm2= 01.40 mA/V 100% gm/S = 1.0 mA/V, 100% Ia = approx. 3.0 mA. These are rather rare now. Very nice tubes! I have more vintage tubes for sale in my other listings.

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