my assessment would be the same as Janey - this is an older IF machine (the precursor of the 15) that has been refurbished and electrified.
Bobbins for these are a bit harder to find, they are not the same as the class 15.
I have two early IF machines, the ealiest does not have a bobbin winder as it would have been mounted on the belt guard.
Here they are side by side - both long beak shuttle machines.
