Thickness at thick spot: 2.9mm, thinness at thin spot: 1.9mm, Diameter: 23.9mm What error, and is there a market for such? The thickest spot is above the dogs heads, and the thin spot is below their feet. This has a security edge that is not reeded. It is so thin on the one side that it is just barely a slit between top and bottom edges. NGC: says $10.00 for VF condition, does this add to or detract from value?