Brand record is a special symbol used by publishers to interpret editions, which is also called brand, book brand or book brand. Brand records mainly record the time and place of publication, the name of the publishing house, the name of the room, and even the font size, version characteristics and publishing process of the bookstore. Books with brand names originated in the Tang and Five Dynasties and were widely promoted in the Song and Yuan Dynasties, but most of them were printed in the Ming and Qing Dynasties. At first, the card was just an inscription without a border, and later it developed into a box around the text. Common ones are single line, double line, three line, four line, long strip and tile shape. Later, Zhong Ding-shaped, incense burner-shaped, harp-shaped, lotus niche-shaped and seal-shaped styles appeared. Brand names usually use four fonts: true, cursive, official and printed.
Card face recognition is the most basic recognition method. By comparing the patterns, colors and numbers on the card surface, the authenticity of the card can be judged. For mahjong tiles, we should generally pay attention to the following aspects: First, the color. Authentic mahjong tiles generally have only three colors: ten thousand, stripe and tube. If there are other colors on the tile, it is fake; Secondly, the number plate, the font on the number plate should be simple, not modern printing font; Finally, there are lines. The lines on authentic mahjong tiles should be raised, not printed.