The only possibility I can think of is it's a clone. China is pretty well known for being "less than strict" with IP laws. Illegal cloning goes on a lot and if there's a market for the 060 somewhere they may have done it to.

Chips end up in all sorts of weird and wonderful places (e.g. the G4 was popular in imaging systems at one point) so who knows, the 060 might be popular in a specific niche.