Rare vintage and quality 7-pin metal-ceramic tube socket with gold plated contacts and black painted aluminium shield made by Tesla. This rare tube socket (originally used in vintage RDM radio stations, which were made in Tesla Hloubětín) is ideal for tubes with general height approx. 46 mm (measured from the bottom of the pins to the tip of the glass envelope). It is suitable for tubes like 6J1P-EV (6Ж1П-EB), 6J1 (China), 6F32 (Tesla), 6J2P (6Ж2П), 6AK5, EF95 and many others. Without the aluminum shield it may be used for all tubes with heptal (7-pin, B7G, small button) base. New old stock tubes. The springs inside the aluminium shields (made from steel) are already wearing some light oxidation marks. Made in the end of the 70's and early 80's.