DIN EN ISO 6346:1996-01

Specification of a system for the identification of ISO Containers: an identification system with an associated system for verifying the accuracy of its use having: mandatory marks for the presentation of the identification system for visual interpretation, optional marks which may be used for automatic machine readable information (AMRI) system purposes; a data coding system for country and container size and type with corresponding optional marks for the display of these; operational marks, mandatory and optional; physical presentation of marks.