maybe not turn of the century, but it could be 30's. if you look at the groud behind the bike, you can barely make out tire tracks. the bike also appears to have double step wheels, presta valves, the stem bolt is not on top of the stem, like in most older bikes, the chain doesnt look like a skiptooth or block chain, and if you look closely at the bottom of the wheels, you can see the tire is flattened from the centrifugal force and speed of the bike.