Doesn't matter really. The coins are always machined, usually with one fitting inside the other, thus leaving the edge the same as it was originally. But with this one it appears that the 2 coins were just ground or milled down and then the 2 halves soldered or glued together because there is no seam or color change visible on either side. So I would imagine that if you looked at the edge you would see the 2 halves.
Sorry Rick, but I strongly disagree with you on this. It's worth what he paid! Only when he sells it, will it's worth change. The question is, will it's worth go up or down? But it's worth is what he paid. To the Seller it was worth what he got for it. To the Buyer, it was worth what he paid. Funny thing, but that's the same price, it's worth! The worth only changes when the item changes hands.