Instructions
Look for a serial number or a marking of some kind from the manufacturer to help you determine how old the sewing machine is. The serial number is usually stamped on a plate on the front of the base of the machine. In general, a low serial number on an older sewing machine has the best chance of being valuable. Find out how many of that sewing machine the company produced and, if possible, how many remain. Check with the company, if it is still around, or in a collector's guide, for information about your sewing machine.
Look for publications such as "Antique American Sewing Machines: A Value Guide," "Warman's Antiques & Collectibles Price Guide" and "Antique Trader Antiques & Collectibles Price Guide," which have an entire section devoted to older model sewing machines. Online sites, such PriceMiner, WorthPoint and Kovels can also give you an indication of value for your sewing machine.
Review the sewing machine for damage such as scratches or paint chips; sewing machines that are in better condition are likely to fetch a higher price than one that is marred in some way. Review the condition of the sewing table and stool as well, as these can add to the value of the sewing machine. Look at the surface of the table for any scratches, indentation, needle marks or other defects. Check the stool for blemishes, stains or rips in the cushion. Use this information and compare it with the information in your condition guides.
Check to see if the machine is in good running condition. Plug the machine in, if it is an electric model, attach a bobbin with thread to the machine and thread the sewing needle; if you know how to sew, try to sew with the machine; if not, just turn on the machine and press the pedal to see if the bobbin is feeding the needle. Press the foot pedal to see if it runs, if it is not an electric machine. Verify that all accessories related to the machine, such as needles and bobbins, are intact and in good working order. Locate a repair person online or in a local directory who works on antique machines to have him look the machine over to see if it is salvageable (meaning that all it needs is a part or two to get it functioning again).
Review collector's sale websites or online auction sites to see if your exact sewing machine or a comparable one is listed. Check collector's publications and review classified sections as some publications list a ̶0;wanted̶1; section where collectors can post what they are looking for.