What factors restrict a proof from grading PF70 everytime? Toning? How often do you see a proof with a hit or a rim ding? Just wondering. Thanks.
Proof are very difficult to grade, especially from PR-66 to 70 IMO. They require VERY close examination with the smallest flaw costing a full point or two. I also believe the strike quality comes more into play in proofs compared to business strikes. Toning, unless it unattractive, shouldn't play a part in the numerical grade IMO.
mmmmmm tough one. All proof sent to inb always get proof 70. But really can you tell the difference from pr 68, pr 69 or 70? I believe even proof 70 can have tone on them.
Hairlines are one thing, but my observations find that slightly off center strikes and very tiny flat spots on the cameo portions which reflect too much light are what usually drop them to a PR69 or PR68. At least that's what I've noticed on modern proofs.
