Nah, they are rolls of some material. The positioning of the strapping indicates that. The color looks like rolled up plastic sheeting.

Armature windings look nothing like that. The armature is the part that spins around inside a motor or generator and the windings are done in two or more axial loops, not radial. You're probably thinking of field coils that are on the outer structure of a motor/generator and they aren't that either, as they are not wound radially either. Both armature and field coil windings have visible laminated metal cores as well and there are none.