I saw this on one of the local CL and it got me wondering what it is. The serial number indicates that it is a 221, but it is not a Featherweight (looks like a 99 to me, but I am not that great at IDing machines yet). Everything I googled with Singer 221 brings me straight back to the FW. It certainly is not priced like a FW.
http://ventura.craigslist.org/atq/5099108006.html
[ATTACH=CONFIG]525855[/ATTACH]