In a comment under a picture of one of my antique sewing machines (well, almost antique), someone wanted to know how to determine the price of an old machine.
There are a couple of different things when considering the value of your antique sewing machine. First who will be buying it, collectors are mostly interested in pre 1900s sewing machines where quilters and seamstresses prefer post 1900s. When you sell you will need to know a few things about your sewing machine like what model number it is, what it is made out of and does it work. It will fetch a higher price if it is in good working order no matter who you are considering selling it to. Singer offers help on identifying your exact make and model as well as valuation services.