Billy
I just picked up an old singer and don't know much about it yet. On the stitch length selecter it says Back Tack. I think it is a 66-16 according to the manual. Serial # is AJ418122. I know the feed dogs don't drop but it has a plate to put over them. It stitches good but I have to try free motion quilting on it If I learn how to post a picture I will get one up for you to see. I also have an old New Home I just received, like it but the needles are hard to find. shorter than the universals.
Suzy