If it says 117.123, it was manufactured in 1939. Here's a link to a page that chronicles the history of the Kenmore sewing machine from 1934 to 1965. If your sewing machine has a 385 model number, it was most likely manufactured by Janome after 1965. The Janome company was founded in 1933 and became part of Stanley Black & Decker in 1971.