I've only gone and bought myself a slabbed coin. I must admit I was intrigued by how a hammered coin would appear slabbed, as I've never seen one in person. But I did buy it for the coin and so I'm now contemplating the best method of breaking the coin out, especially as the NNC do not seem to be as respected as other TPGs. I'm thinking of using a small hacksaw to open the slab but would welcome any suggestions.