Rule 17
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
Any lot of tobacco containing 20 percent or more of greenish leaves, or any lot which contains 20 percent of greenish and green leaves combined, shall be designated by the color symbol “V” in the C group and the combination color symbols “VF” or “VR” in the B and T groups.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.