I noticed that the Jacobs coffee containers I buy have such tag/label on their lid:
What is the purpose of this tag? According to Google Translate, the first word means "Coffee", but can't decipher the meaning of the numbers. 250 isn't the weight or amount of coffee, as it's a 200 gram container.
The tag wasn't added by the supermarket from which I buy the coffee.
I didn't notice any other coffee brand with such tag/label on its lid.