Willcox & Gibbs antique sewing machine, hand crank For Sale

Willcox& Gibbs hand crank sewing machine, when you crank the wheel all the little rods move up and down, little things under the \"table\" move, fascinating to watch and I admit I cranked it for at least 10 minutes just playing with it. I oiled it up, but it\'s dirty, has some rust, I see pitting on the flat part but writing all over it that looks to be sewing instructions. I know nothing at all about how to use these machines, if I did I would keep it. See the pictures for condition, thank you. How old? 100 years at the least would be my guess, probably older.