I am looking to buy a reale with carolus III...the typical big nosed variety but I want to make sure I buy the real deal and not a fake. can someone point me in the right direction, I was hoping to avoid the perils of e-bay on this one but if you know of a few on e-bay that are genuine then I can go that route.
similar to this one

I am a bit iffy when judging the authenticity of these coins which is why I am looking for advice.
it doesnt have to be in the best of shape though the portrait should be pretty good.

