Hard to say from the photos, but the blade might be older with a more recent alteration to add the singo. The carving of the singo and the gonjo is not a very high quality. The hilt may well be recent as well. The sheath looks older and perhaps altered to this shape to repair breaks. The pendok looks nice, maybe silver or silver plate, but it doesn'y look like it belongs on this sheath. To answer your original question it looks to me as if this was pieced together for sale purposes.
