There is another manual at
http://ismacs.net/white/manuals/white-rotary.pdf again it is for the treadle.
As seen in some of the threads about White rotary machines, it will show that they have a specific bobbin case and bobbins. It may have bobbins in the accessory box and maybe someone put the bobbin case in there, too. For me, that wouldn't be a deal breaker. Also I notice the T-shirt plate is there, which is a good thing. The links in my post #2 should help. NZquilter's machine even though made by White does have a different plate.
I was hoping someone might have or know where to get an manual for an electric machine.
Janey - Neat people never make the exciting discoveries I do.