This standard BS 3935:1991 Guide to classification and marking of cattle hides and calfskins is classified in these ICS categories:
59.140.20 Raw skins, hides and pelts
This British Standard provides guidance on the classification and marking of cattle hides and calfskins of UK origin. The hide market codes currently in use are listed in Appendix A.
Classification by quality and weight, and lists codes currently in use for marking purposes.