We changed to the titanium shaft last July, we added the label this July, to differentiate these second generation pumps. The last change was the clamp and fit of the front housing and that was changed last November. It would be very unusual to get a pump that is that old. The stainless steel shaft had a blunt tip just like a straight sawed off metal rod, the titanium shaft has a bullet nose. The pumps that have all the new features have a white propeller on a black shaft, older ones had a white shaft and white base at the bottom of the prop magnet.