✔ 最佳答案
UNCIRCULATED (UNC): A perfectly preserved note, never mishandled by the issuing authority, a bank teller, the public or a collector. Paper is clean and firm, without discoloration. Corners are sharp and square, without any evidence of rounding, folding or bending. No light handling is present, no compromise, a perfect note. An uncirculated note will have its original, natural sheen. So, it is the highest quality A+++