Authentic vintage Hungarian enamel warning sign, reading: "Vigyázz! Nagyfeszültség! Életveszélyes!" (translation: "Danger! High Voltage! Life-Threatening!"). Period: mid-20th century (socialist industrial era) Material: enamel on metal Colors: white background with red warning text and lightning symbol, black border Condition: very good vintage condition, minor signs of age and small edge wear (see photos). Enamel surface glossy and intact, text fully legible. Mounting holes present in each corner. These enamel signs were used in factories, transformer stations and power plants to warn workers of electrical hazards. Today, they are highly collectible as industrial design objects and retro decoration.