Grant51clone,
I have a 99K with the same decals as your machine has, however my machine is from about 1932. It was electric when I got it, also has the spoke wheel. I did a motorectomy and put my Singer hand crank on it. Its a joy to sew with, the grandkids like sewing with it too.(This picture shows it with the Chinese repro hand crank, can't find the other picture)
Sharon