Where is the model of the ancient watch written?

The model of the ancient statue watch is viewed on the back of the watch. There are two parallel numbers on the back of the watch. The first line is the code, the second line is the serial number, and the first four digits are the production date. The first two numbers represent the year, and the fourth letter represents the month (some are English abbreviations). Guo Chao Watch's brand Guzun Watch focuses on diving watches and fashion watches. We have successively developed -60℃ Snow Dragon Watch, 500m, 500m and10000m diving watches, and created lucky star constellation watches and several trend items.