Amazon.com: Metal Buttons 80 Pieces Antique Silver and Bronze Color for Sewing DIY Crafts Sewing Decorations, Mixed Vintage Style Flower Round Buttons
classic brass buttons – Quince & Co.
Amazon.com: ZYAMY 10pcs Bronze Mushroom Domed Buttons Antique Brass Dome Buttons Round Sewing Buttons with Shank, 15mm
Amazon.com: E-outstanding 10PCS Bronze Mushroom Domed Buttons 21mm Antique Brass Dome Buttons Round Sewing Buttons with Shank for Suits, Coats, Uniforms, Shirts and Jackets Etc.