This Hand Stitcher is stamped A.M. H.S.M. Co pat Oct 21, 1884. It has the original thread and needle. It is what is known as an American Hand scissors-style sewing Antique American Hand Sewing Machine machine. Value for such a machine, depending on condition and other factors, can run from a couple hundred dollars to a couple thousand dollars. Other examples of this style sewing machine would be the Goodbody patent, Hendrick patent, and Beckwith sewing machines. The truth is this type of machine is similar to the products that are being sold on late night TV today. Cheap, unworkable, and gimmicky, but great collectibles.
There were relatively few sewing machine manufacturers in the earliest years, but the invention took off to the extent that by the 1890's there were literally millions of sewing machines being produced by largest manufacturers and sold to every household in America. More information about these machines is below.
Some antique sewing machines, such as Wilcox & Gibbs and most Wheeler & Wilson, carry early patent dates but also carry much later patent dates and were produced well into the 19th and even 20th Century. They are bought by collectors and decorators, and their value is based more on their decorator appeal rather than on their historical significance. First model examples of both of these sewing machines can sell for several thousand dollars, while later examples sell for $100 to $1000 or so, depending on the details.