It doesn't make sense. Scuffed up wheels and a new white fan (the fan was not available at the time of the Legend) make it seem like someone with a can of paint and new decals (which are not hard to find). The bag is possible to have silk screening done on.
The odd thing is: Kirby had the gold plated machines (Tradition and Heritage) for their top dealers, I know because I have both models in gold. The black is what's throwing me off, added to the fact that the bag on the black classic III and the Legend are identical. Leading me to believe it might not be genuine Kirby - why wouldn't they have changed the graphic in ten years between the black Classic III and the Legend?
They've also painted over the serial number.