The Antique Singer Sewing Machine Oil Plate is a rare and valuable piece of history from the pre-1930 era. This embossed metal disc was used to cover the hole for lubricate sewing machine parts, showcasing the craftsmanship and design of that time period. Perfect for collectors of antique sewing memorabilia, this oil plate adds a touch of nostalgia and authenticity to any sewing machine enthusiast's collection.