There are a couple of different things when considering the value of your antique singer sewing machine. First who will be buying it, collectors are mostly interested in pre 1900s sewing machines where as 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. For more information try http://www.ehow.com/about_4614377_values-antique-singer-sewing-machines.html