When sourcing antique lanterns, material selection is critical for both aesthetics and durability. For outdoor use, prioritize solid brass or copper as they develop a natural patina and are highly resistant to corrosion. For indoor decorative pieces, iron with powder coating or zinc alloy offers a cost-effective alternative. Ensure the 'antique' finish is achieved through electroplating or high-quality hand-painting rather than cheap spray paint to prevent peeling and ensure a premium vintage look.