This is a crossover pipe for square case bevel twins with 2 exhaust clamps also stainless steel.
The clamps have the STAINTUNE logo on them. There is no logo on the pipe but as it is made out of stainless steel I would assume it is also made by Staintune (Australia) but who knows, maybe it is a Keihan pipe. Either way, they are both excellent as what they do and have been doing it a LONG time so,.....
No dents, you can use it as is or polish it to make it look new again, whatever you want.