Special 59 Panda: Original work by Wu Zuoren, design by Sun Chuanzhe. Released on August 5, 1963. Set of 3 pieces.

There are two types: toothed and toothless. Teethless are very precious. You have two 8-cent letter-sale stamps, and they are in good condition. Try to find another 10-cent one.

Special 60 Golden Monkey: Original work: Liu Jilun, design: Sun Chuanzhe, released on September 25, 1963. A set of 6 pieces

There are two types: toothed and toothless. The toothless ones are also very precious. Your letter sells for 8 points. I can't tell whether it has teeth or not. I guess it has teeth. The condition is okay.

They are all works by everyone and have collection value.

The prophet on the first floor answered incorrectly. Canceled stamps: The special postmark (mostly in English) is sold on unused stamps. Letter sales stamps: stamps with the postmark of the place where the stamps are used are stamped on the used stamps. If they are not stamped, they are called new stamps.