Antique Vintage Heavy Duty Singer 99-13 Sewing Machine W/ Case & Book Key. The Singer 99-13 sewing machine is a vintage model that was popular in the mid-20th century. It’s known for its durability and reliability, making it a favorite among sewing enthusiasts and collectors. It’s a straight-stitch machine with a low shank, and it’s often sought after for its classic design and functionality. The Singer 99-13 sewing machine is a versatile and reliable machine known for its features such as. Straight stitch capability: It excels at producing precise straight stitches, making it ideal for various sewing projects. Portable design: Its compact and lightweight build makes it easy to transport and store, making it suitable for sewing on the go. Built-in bobbin winder: It comes equipped with a convenient built-in bobbin winding mechanism for efficient bobbin preparation. Adjustable tension: Users can adjust the tension to achieve the desired stitch quality on different types of fabrics. Reverse stitching: It typically offers a reverse stitching feature, allowing users to reinforce seams and secure stitches. Metal construction: The machine is built with durable metal components, ensuring long-lasting performance and stability. Vintage design: Its retro design adds charm and character to any sewing space, appealing to both sewing enthusiasts and collectors alike.