largely intact c. 1920's vintage american single-sided porcelain enameled "please do not spit" new york city subway sign, fabricated by the baltimore enamel and novelty co., new york city, ny. the rectangular-shaped sign is comprised of cold-rolled steel or iron with original brown porcelain enameled finish remaining largely intact. the wall-mount subway station sign contains six screw holes with grommets intact. measures 20 x 5 3/4 inches.