luce321, my understanding is that Necchi didn't keep very good records. If yours says, "Made in Italy" you can join the Yahoo group for some info. The best I could find out about mine was that it is pre 1950 because it has a VN, not just a N. Then the block N was modernized and that's another marker, but I don't the year on that. My number 600630 and it's a BF, so it only straight stitches.