Agree with '80s - the underside looks like a synthetic, so I'm think if that's the case it's all synthetic. A real skin would be backed onto leather.
To tell if it's skin or embossed leather, look closely to see if there are individual scales: you can see on yours there aren't, that it's all one piece. Also, look at the edge, where the "skin" meets the backing. Skins are thin and fragile. Perhaps do some research by looking closely at items you know to be authentic and then compare to the fakes.