Two Signs Including a Prairie Farmer Protective Union No Trespassing Sign and a Colorado PlaqueBrand Used Works4.6(700)$10Feb 22, 2026
COLLECTION OF 2: GRUEBER DETECTIVE AGENCY & JEWELER'S SECURITY ALLIANCE PORCELAIN SIGNS.Dan Morphy Auctions4.2(1.4k)$2505 days Left
(2) Vintage “Danger High Voltage?? Porcelain Enamel Signs. “Commonwealth EdisonFlannery's Estate Services4.6(458)$25Feb 28, 2026
5 pcs Vintage Metal Signs, incl. "No Trespassing," "No Peddlers or Agents" & More! See pics.Crawford Family Auctions LLC4.6(195)$20(1 bid)
“Danger “ Only Regular Operator Allowed To Use This Machine SignFlannery's Estate Services4.6(458)$25Feb 28, 2026
HAVE FARE READY PAY AS YOU ENTER PORCELAIN BUS SIGNDan Morphy Auctions4.2(1.4k)$100(1 bid)6 days Left
ALTA CREST FARMS "TRESPASSING FORBIDDEN" PORCELAIN FLANGE SIGN W/ COW GRAPHICDan Morphy Auctions4.2(1.4k)$5006 days Left
Group of 2 General System Warning Buried Cable Metal SignsMatthew Bullock Auctioneers4.7(2.1k)$0Mar 07, 2026
Group of 2 Vintage Illinois Truck License PlatesMatthew Bullock Auctioneers4.7(2.1k)$15(1 bid)2 days Left
Porcelain Sign “Spitting Smoking Prohibited “ New York City SubwayFlannery's Estate Services4.6(458)$30(2 bids)Feb 28, 2026
