original and intact american industrial desk or countertop spun yellow brass adjustable jewelers lamp designed and fabricated by the apollo electric company, chicago, il. the oversized lamp with deep bowl reflector retains the original highly sought after metallic blue-tinted silver nitrate "mercury" glass inner shade used to greatly enhance or intensify the incandescent light source. the lamp is supported by a u-shaped bent tubular arm affixed to a weighted cast iron pedestal base. the swivel lamp has been rewired. measures 24 x 10 3/4 x 12 inches.