First time posting in this thread, I'm just taking inventory of all the singers I have bought over the years and didn't know anything about them. I just loved them. Well I'm learning fast. Sometimes I read so much here my eyes hurt! Lol! This one is a 99 - AA547595 - 15,000 manufactured August 4 1925. It has the knee control. Wiring looks a little dicey but it moves well. I'm very excited. I didn't know I had two 99's!! Hope I got this right!