97 indicates that there is patina or rust on the coin surface, that is, the original state of the pit.

92: Cleaning is serious. Incorrect cleaning methods can lead to surface damage.

93: Planck's defects have casting defects, and the coin cake itself has congenital defects when playing with coins.

94: Change the surface treatment. Defects due to carving, repairing, cleaning or covering or changing the appearance with paste-like substances to cover the sky from the sea.

95: Scratch, scratch or scratch. Large or deep scratches, or scratch fragments.

Rating currency

Generally speaking, a coin that has been appraised by a third-party rating agency, given an objective rating on the product grade and encapsulated with an anti-counterfeiting hard box is a rating coin.

The international "credit rating" method for coin collection is what collectors call "rated coins". The concept of rating coins comes from the United States, and collecting rating coins has become the mainstream way of collecting coins in the United States, and it has gradually affected the whole world. On the whole, rating coins have the advantages of fidelity, protection, transparent price and many circulation channels.

There are high-quality rating agencies at home and abroad, and their rating currencies have some room for appreciation.

The above content comes from Baidu Encyclopedia-Comment on Coins.