pair of matching early 20th century american industrial single-sided solid copper switchboard identification plaques with incised lettering

early 20th century single-sided solid copper "basement" open switchboard beveled edge switch identification plaque with lightly incised lettering

c. 1940's single-sided die cut steel "high voltage" exterior factory fence mounted danger or cautionary sign with great surface patina

c. 1930's original nicely aged american industrial green and white enameled "high voltage" die cut steel porcelain enameled sign

original nicely weathered single-sided american industrial "high voltage" green porcelain enameled chicago power substation sign

original vintage american industrial timeworn die cut steel "high voltage" wall-mount factory danger or cautionary sign

late 1940's "new old stock" vintage american industrial die cut steel high voltage single-sided factory cautionary or warning sign

american industrial interior paint factory wall-mount "high voltage" baked enameled sheet steel danger or cautionary sign

c. 1950's vintage american industrial single-sided cold-rolled steel cherry red enameled "high voltage" factory cautionary sign

hard to find late 19th century original and intact heavy ornamental cast bronze james j. wood-designed early electric switchboard ammeter with abundant foliated scrollwork along the face

rare oversized antique american industrial early 20th century 1000 amp solid copper three-arm no fuse heavy duty switchboard panel knife switch

original early american industrial salvaged chicago high voltage "type d" circuit interrupter or fuse designed by nicholas j. conrad

rare original and completely intact type d "generator 1" beveled and etched glass encased sangamo watthour meter from commercial building switchboard

original oversized antique american industrial early 20th century 1000 amp solid copper three-arm no fuse heavy duty switchboard panel knife switch

rare oversized salvaged chicago stadium new old stock boxed western electric "sunbeam" mazda "type c" tipped-end light bulbs with mogul bases

hard to find and highly desirable 19th century american industrial ornamental cast bronze flush mount electric switchboard "wood" type circular-shaped voltmeter

pair of c. 1908 original sub-basement open electric switchboard beveled edge solid copper "positive" and "negative" plaqes

hard to find early 20th century american antique industrial cast iron weston voltmeter with original swing-out cast iron bracket

hard to find late 1940's american industrial factory "low voltage" baked enameled steel sign with skull and crossbones

limited edition large format digital print entitled "switchboard" with black enameled custom-built wood frame with clear plate glass

rare early 20th century american antique industrial new york city subway flush mount substation cast iron encased analog voltmeter

c. 1940's brightly colored cherry red enameled single-sided die cut steel power substation "high voltage" danger or cautionary sign

early c. 1920's american vintage industrial sizable single-sided vitreous enameled factory worksite "high voltage" danger sign with typical surface wear