(a) The standard grades for cantaloupes established by the United States Department of Agriculture as United States government grades, are the official State grades for all cantaloupes packed in closed containers, whether offered or exposed for sale or presented for intrastate or interstate shipment.

(b) Cantaloupes which are offered or exposed for sale, or presented for shipment in any closed container shall be marked plainly and conspicuously with the name and address of the person producing or marketing the cantaloupes as well as the true name of the variety. If the true name of the variety is not known to the packer or the person by whom the package is packed, then the package shall be marked “variety unknown”.