This is a vintage Stanley Bailey Sweetheart No. 4 Type 12 corrugated bottom plane, made in the United States between 1919 and 1924. The plane is a great addition for collectors of vintage tools and hardware, with its unique design and history. The brand Stanley is known for producing high-quality tools that are durable and reliable. This particular plane is in good working order and has a beautiful patina that adds to its charm. It would be a great addition to any collection or a valuable tool for anyone who is passionate about woodworking. Three Pat dates Mar 25, 1902. Aug 19, 1902 and Apr. 19, 1910. The frog plate has a Stanley emblem and heart on the back side.  Blade also has a sweetheart emblem and New Britain conn. USA. This is a RARE plane. Very good condition. Frog plate has a small chip on the corners. Please view my other Stanley tools.