The Kenmore is a good machine sold by Sears. I have one that is probably 50-60 years old and the only thing wrong with it is the power cord. It was my Mom's and I learned to sew on it. It is very heavy and in a cabinet, so hard to transport. Some day I will get it fixed. It looks like that door on top is for cams (just a guess). I would date it to the 1960's (just a guess).
Sue