Metal farmhouse warning sign with bold "THIEVES BEWARE!" header, American Poultry & Livestock Marking Association, circa 1930s-1940s.

This vintage agricultural security sign features bold red and black lettering on a cream-colored metal background. The striking red "THIEVES BEWARE!" headline and "PROTECTIVE SERVICE" footer create high-visibility emphasis. Detailed text explains: "The Poultry and Livestock on this Farm are Marked and Registered with the Sheriffs and Various Buyers" and "THIS WILL PROVE OWNERSHIP BY LAW."

Produced by American Poultry & Livestock Marking Association of Minneapolis, Minnesota, the sign represents an early livestock identification and anti-theft system developed during the Depression era when farm property theft was a significant concern. The manufacturer mark "B. & B., ST. PAUL, MINN." appears in the lower corner.

Condition Notes: Original cream enamel background shows considerable wear, oxidation, and surface rust. Multiple areas of paint loss and scratching evident throughout. Several edge chips and corner wear visible. Some crazing to the painted surface. Sign retains excellent readability despite age-appropriate patina. Reverse shows substantial oxidation and remnants of mounting adhesive. Refer to the pictures and in person inspection for condition.

Approximate Dimensions: 11 × 8 inches