These are all puerh tea cakes made according to some recipes or formula. The first 2 set of numbers represent two very popular puerh green tea cakes while the third is a puerh cooked tea.
|7542 green puerh made in 2003|
The last digit 1 was used to represent Kunming Tea Factory, 2 for Menghai Tea Factory and 3 for Xiaguan Tea Factory. Hence 7542 puerh tea cake was used to mean that the tea was made in Menghai factory in 1975 using grade 4 tea leaves. 7581 tea cake meant the tea was made in the Kunming factory in 1975 using grade 8 tea leves and 7633 tea cake was made in the Xiaguan factory in 1976 using grade 3 tea leaves. This seemed to be a fantastic idea to distinguish puerh tea cakes produced in different factories. But the initial implementation of this method of identifying tea products met with confusion and inconsistencies.
|Menghai Tea Factory|
|The legendary 88 green cake is a 7542 cake|
|7581 bricks made in Kunming Tea factory|
Another famous tea is 7562, the bricks made before the end of cultural revolution in the 1970s. The factory later also produced little square puerh tea bricks (100g weight) following the 7562 recipe. These are tea worth collecting due to their remarkable quality.