Vintage 60's Green Case Singer Buttonholer No. 489510 With Templates & Manual The Vintage Green Case Singer Buttonholer No. 489510 is a rare and collectible sewing accessory designed for Singer sewing machines. Made in the United States, this buttonholer comes with templates and a manual, making it a unique and valuable addition to any sewing enthusiast's collection. Compatible with Singer machines, this buttonholer allows for easy and precise buttonhole stitching, perfect for vintage sewing projects or adding a unique touch to your clothing or crafts. Good condition w/ manual and all parts. The back hinge is separated.