I have a machine with nearly the same date as yours. It also has the long bobin. My mother gave it to me about 25 years ago and because of the odd bobbin, I have procranstinated trying it out. I learned to sew on an older treadle with a regular bobbin and suffer the old dog/new trick syndrom. Last summer I bought an older one at Goodwill with the regular bobbin for 29.99. I will need to get them both up and running so they don't seize up.