Purists will tell you that an item has to be 100 years old to be considered an antique. HOWEVER, no matter how old, the machine, as long as it's not a repro, is collectible, and you got a bargin, providing all the parts are there and it works! :)
Congrats! Can't wait to see the pictures, and Gail is right, get the serial number and go to the Singer website to find out the age and model of the machine. :)