Method of distinguishing the authenticity of stamps

Distinguishing editions It is very important to distinguish editions correctly when authenticating stamps. Generalized version refers to the difference of printing method, printing place and printing quantity of stamps. In a narrow sense, version only refers to the category of stamp printing methods, that is, what printing plate is used for printing. Different versions have different characteristics. For example, lines and points are the main features of carved grids; The dot of the negative printing plate is round or water chestnut with the same size and hollow center; The offset printing point is composed of solid yellow, red, blue and black spots with different angles and sizes, forming a plum blossom shape. Therefore, it is more reliable to distinguish the authenticity of stamps according to different versions or the same version, but with different network patterns or dot characteristics.

Familiar with paper postage tickets are usually printed on special paper, which is often obviously different from ordinary paper. Familiarity with the characteristics of various papers helps to distinguish authenticity.

Mastering secret stamps stamps is to strengthen the responsibility or anti-counterfeiting ability of printing plants. Stamp collectors should try their best to master the characteristics of steganography by watching and studying stamps, which is very useful for distinguishing authenticity.

Distinguishing the color of the brush depends on the hue, and the printing process of stamps is different, so is its hue. The hue of counterfeit goods is often distorted, and the color changes and fades.

According to the characteristics of perforation, measuring the degree of perforation can identify the authenticity of stamps.

Make sure that the gummed stamps are coated with gummed stamps, and different gummed stamps are coated at different times. According to the texture of the glue surface, whether it is real glue or non-stick fake glue, the authenticity of stamps can be identified.

There are strict specifications for the comparison of stamps. Due to production conditions and technical reasons, forged stamps are often irregular and different from real stamps.

Observing watermarks Some stamps are printed on watermark paper. Stamp collectors should memorize them through observation and research to identify the authenticity.