c. 1940's american industrial single-sided "out of service" hospital power plant valve status hanging sign

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

original state-issued original c. 1960's single-sided die cut aluminum illinois state tollway sign with large directional arrow

original early 20th century american exterior building facade transom sun-purple-tinted luxfer prism sawtooth glass patent tile

brightly colored c. 1940's american industrial st. louis meat processing plant "do not clean..." cautionary pressed metal machine sign

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

vintage american industrial brightly colored yellow "open door slowly" factory cautionary wall-mount steel sign with intact grommets

c. 1940's american industrial single-sided stamped enameled metal "get the safety habit" safety first think factory sign

original antique american oversized ywca hotel building interior die cut bronze metal guest room door key fob with steel grommet

unusually large early 20th century double-sided stamped bronze metal ywca hotel building key floor with lightly incised numbers

early 1920's original american single-sided stamped brass office lavatory bathroom door "men" sign" with hanging chain

rare early 20th century original single-sided heavy die cut brass chicago athletic club building "lavatory" sign with fanciful engraved letters

original early 20th century oversized single-sided copper-plated cast iron interior chicago bank building "paying teller" plaque

c. 1920's "new old stock" single-sided antique american single-sided stamped yellow brass commercial store door "pull" sign

single-sided early 20th century heavy cast bronze metal flush mount commercial bank building door "push" backplate with nicely aged patina

original single-sided vintage american industrial "keep hands out of machinery" cautionary factory sign with intact grommets

c. 1930's american antique industrial single sided die cut enameled steel factory electrical substation "keep out" danger sign

very rare original american depression era c. 1930′s wpa-era ornamental cast iron west side elevated highway surface mount emblematic rondel or plaque

c. 1950's vintage american red painted folded and pressed steel exterior single-sided supermarket letter sign with raised edges

early 1950's vintage american industrial single-sided baked enameled die cut steel "do not place" factory notification sign

original c. 1930's american vintage industrial single-sided die cut steel white porcelain enameled "keep area clear" instructional factory sign

unusual weathered and worn american depression era stamped steel "i can stop..." vintage automobile license plate sign topper

late 1920's american "new old stock" porcelain enameled die cut steel "do not disturb" flush mount warning or cautionary sign with intact grommets