Charlee, it is not a 319 - I enlarged the picture - it is a later Singer 15.125, I think - see the tension on the side rather than on the front?
Do some research.
Here is a Singer 15 - not so nice as that green one, this should be good for a Halloween prop if you are into high priced props
http://cincinnati.craigslist.org/atq/3289188812.html