Symbol 2794 from ISO 7000 - Title/Meaning: Packaging unit Function/description: To indicate the number of pieces in the package.
pay attention to orientation of symbolAdditional information: 
A number is inserted in the symbol to indicate the number of pieces in the package.
Own work using: iso.org/obp/graphics/grs/9e163a9a-89af-4c37-9546-b9f936ee9443 200.png
Vectorization:  Mrmw