What's the incentive?

How much is a signature worth on a slabbed coin? For example, a Mercanti. Are they that rare? It seems irrelevant to me when judging a coin's actual value. You have the floor...
0
Comments
coins will converge in price. It is just a marketing gimmick.
<< <i>Only worth more if buyers think it is worth more. I would expect that over time the "signature" coins and same grade non signature
coins will converge in price. It is just a marketing gimmick. >>
+1