Great machine and so glad it is in a home where it will be loved and cared for. I just got a white Rotary and last date on it for patent is Sept 10, 1905 and there is one starting in 1890 and 6 total so I am thinking 1905-1908 or so. Still waiting for something back on date, as when I called I finally gave up on the hold after 30 minutes. Did you get tools with it? Also have my grandmothers Singer bought in early 1950's so with two newer sewing machines and two surgers I am at my limit (space very limited). Enjoy and let us know if you find out more. Carol