How to tell if a bicycle seat is leather?

I bought a cheap bicycle seat on Ebay with springs that advertised it was a leather seat, sold by a U.S. vendor. Now I see identical pictures of the saddle I bought in multiple Ebay ads by different vendors, half claiming the saddle is real leather in their ads and the other half saying that their saddle is fake patent leather. Cost is $15 plus shipping, or $36 or so with free shipping.
Yes I know you get what you pay for, but I'm confused as to how the identical picture is used by all the vendors if some are leather and some are not.