МНГ-16 (УЭЛЗ)

The lamp by the Ufa plant, on the base of which 13.5 V 0.18 A is listed, came across to me when disassembling scraps of garlands bought for a penny at a flea market, as they say, by weight. The production date is not known even approximately, but judging by how much the base is darkened, I assume that this is the 1960s-1970s. There is paint residue on the flask. The last photo shows working at a voltage of 5 V.