I bought this machine at a yard sale. The lady did not have the manual for it. She also could not remember how old it is either, maybe 25 to 30 years. It is a Charger 491 series. The numbers on the model plate are 626612 G-SN, model C. There are also numbers along the bottom edge of the base, they are: 626193010. I'd appreciate any info I can get on this machine. By the way, I'm very impressed with it. It hadn't been used and sat in an attic or something for most of the time she owned it (I believe she bought it band new) and it works great. I just am not sure that I'm threading it correctly, the thread gets tight and breaks ever so often. Thanks, Kim Salazar