Genuine 2SC1971 transistor

I hear that there are many fakes for the 2SC1971 transistors and I think I might have bought some fake ones. They just look fishy to me. I was wondering if anyone knew of an online store or eBay seller that sells actual authentically real 2SC1971 transistors. And how do you test/spot a real one from a fake one? Or maybe a readily available equivalent transistor?

Mitsubishi stopped production of 2SC1971 many years ago. So most of the parts sold today are counterfeits.

But power transistors made by Advanced Semiconductor Inc. are worldwide recognized that match very well the originals:

http://www.advancedsemiconductor.com.../2SC1971.shtml