This Featherweight’s serial number is AD782925. Commissioned Nov. 27, 1934. The serial number on a Singer Featherweight doesn’t reveal the actual manufacture date. It reveals the date the serial number was commissioned. Follow the “Timeline” on www.singer-featherweight.com to learn about subtle changes to the Featherweight and when they happened. The “Timeline” helped me determine this machine was made sometime between 1934 and 1936. Go to: www.singer-featherweightc.com, then click on “School House”, the “Historical”, then “Timeline”.