My husband just rescued my old singer sewing machine with cabinet from our storage shed. After reading all the posts about older machines, I have been impatiently waiting to get it home. Now that I have it, I need to know what to look for to tell if it has more worth than the sentimental memories of have of it. I believe it was my grandmothers, I made a dress with it 40 years ago when I was in high school and it turned out fine. It is a treadle and appears to be in great shape, dusty but all in tact. Any input would be great. I have it protected outside for now and it is dark so I can't identify any markings or writing. Anyone with info on what info I need would be helpful. Thanks !