I have a Wheeler & Wilson treadle that I found the date on a plate on the bed of the machine. It was born in 1898. I also looked it up on the Smithsonian's website and was impressed with what l saw. I am neither near the machine or my computer. I will try too get this info to you later. Do you have the table it is set into with the cover that sits over the machine with the rounded edges? I do, out is lovely and in great shape for it's age. It was an anniversary gift from my hubby several years ago.