Hello Dawn,
The machine would be worth the money provided the rear slide plate weren't missing. I had a dickens of a job getting a rear slide plate for my Vickers Modele de Luxe, which is like the one shown on the Sewmuse link, so I expect you will have a harder job in the States. A Singer plate will not fit. Also, with Vickers machines you will find that Singer feet are not compatible, so you will be limited to the feet that come with the machine. However, because they are based on German designs (Frister and Rossmann VS in particular) you have the added bonus of reverse, which Singer never got round to doing on a VS.
Here is a link to a thread Miriam started giving links to my Youtube channel, which will give you all the information you need for using long bobbin machines.
http://www.quiltingboard.com/vintage...v-t167789.html
Long bobbin machines make an excellent stitch. Singer manufactured them until the 1960s - they would have stopped long before that if they weren't any good. You can do just about everything on them except free motion quilting.
I learnt to sew on my mum's 28K (now a Youtube star) and still use long bobbin machines regularly. I consider round bobbins modern.
Even if you don't get this BSM, don't hesitate to buy a decent long bobbin machine. You will have hours of fun with it.