Oldham miner's electric safety lamp
"S" type "Thor" miners electric safety lamp
Miner's Safety Electric Lamp
Sewer flusher's Spiralarm test lamp
1970-1980
Miner's Safety Lamp
circa 1928
Safety lamp
Safety lamp: Gray type, for coal miners, Hydrogen cylinder and Mahogany box
Miner's Gauzeless Safety Lamp, 1925
1925
Lancaster's Patent Ruby Lamp
circa 1880
Safety lamp
1883