The image is a photograph of a plaque on a wall. The plaque is written in Chinese and English and is titled "Private Seals and Signature in the Tang, Song and Yuan Dynasties". The plaque appears to be made of a dark green material and has a white border. The text is written on a black background and is in a traditional Chinese font. Below the text, there is a subtitle in English that reads "In the Tang Dynasty, seals were used on paintings and calligraphy for appraisal and authentication. It became fashionable for seals of scholar's designated names, literary names and studios to attain artistic value. Regular script seals appeared on the market. Even the common masses used seals due to the urban prosperity. Private seals which had declined for a time now began to increase, giving rise to the formation of literary seal-engraving."