What makes you think there were no machines? There may not have been electric machines but there were plenty driven by other means. Apprentice power turned lathes by hand, water power was also used. Many of the things we try to do, today, were done with hand tools in the past.
The legs you show are reeded, taper reeded, not fluted. They aren't colonial, more likely Empire or neoclassical, which would have been around the turn of the 19th century. An age when machines were taking over, water powered at first. The picture isn't clear and it doesn't show the entire piece or the finish very well. The finish appears to have a film that may be scratched, chipped, maybe some pickling but it's hard to tell. If so, this would be a modern piece, 1950's?