EL34 Siemens 6CA7 NOS NIB Platinum Matched pair WELDED PLATES OO getter EI make

One matched pair (2 tubes) of genuine EL34 Siemens 6CA7 NOS NIB made by EI in late 80s. They are tested with 250V on plates and G2 and -12V on G1 (100mA / 102mA), 100mA is 100%. Very strong pair, platinum matched, within 2%!!! These are very strong examples, selected from big number of the same batch tubes! It's really hard to find four practically exact genuine NOS Siemens EL34 with perfect prints and the same etched codes today, be fast and take this opportunity while they are still in stock!!! These tubes were sold under Siemens, Telefunken,Philips and few other brands in 90s, when West European and US plants were closed and there were still high demand for these quality EL34 / 6CA7. They are made by EI tube factory in Yugoslavia in late 80s. Ultra rare - Welded Anodes!!! Genuine triple mica, with dual OO getter. Mica spacers with 12 support points, stapled plates, three holes on plates, black base with central hole in the guiding pin like vintage Mullards.