Decorative antique cast iron keyhole escutcheon with folding key cover in an authentic French château and Gothic Revival style, likely dating from the late 19th to early 20th century. The piece combines rustic architectural ironwork with richly detailed ornamentation, typical of antique French manor and country house hardware. The hinged decorative key cover is designed in an elegant medieval-inspired form with stylised fleur-de-lis and scroll motifs, mounted on a long backplate intended to frame and protect a traditional keyhole. Such hardware was commonly used on heavy oak entrance doors, interior château doors, cabinets or gates. Its weathered cast iron surface and aged patina give the object a strong historic appearance and decorative presence. The combination of robust material and refined ornament makes it especially suitable for rustic, Gothic, farmhouse or château-inspired interiors.