Some old Singer sewing machines are valuable, depending on their age and condition. For example, a antique Singer sewing machine from the 1800s in good working condition could be worth thousands of dollars. However, many older Singer sewing machines are not particularly valuable, especially if they are in poor condition or do not work properly. If you are unsure about the value of your old Singer sewing machine, it is best to consult with an appraiser or antiques expert.