Original quality russian tube socket PL3-5-XX (ПЛ3-5-XX) – LOCTAL-8, B8G (Sylvania, 1938). Sockets may be marked as PL3-5-14 or PL3-5-16, these tube sockets are suitable for tubes like 4P1L (4П1Л), 4J1L (4Ж1Л), 2J27L (2Ж27Л), 2P29L (2П29Л), 2H1L (2Х1Л), 12J1L (12Ж1Л), UCH21, ECH21, UBL21 and many others. New old stock sockets, year of production may differ (please see the gallery).