7-pin tube ceramic socket with aluminum shield 60mm (PLK7-E60 in Cyrillic). Height of the metal shield is 60mm. Silver plated contacts!

PLK7 is rsh4 type socket that fit to 1A1P, 1A2P, 1B2P, 1K1P, 1K2P, 2P1P, 2P29P, 3C18P, 6V32, 6A2P, 6A3P, 6J1P, 6J1P-V, 6J1P-E, 6J1P-EV, 6J2P, 6J2P-V, 6J2P-E, 6J2P-EV, 6J38P, 6J38P-EV, 6J3P, 6J3P-E, 6J40P-D, 6J4P, 6J53P, 6J5P, 6K1P, 6K4P, 6K4-EV, 6N15P, 6S1P, 6S2P, 6H2P, 6H2P-EV, 6H2P-ER, 6C4P, 6C4P-V, 6C4P-E, 6C4P-EV, EC92 RWN RFT, EC92 Tungsram, SG-16P, SG-1P, SG-1P-EV, SG-SP etc.