(b)in the case of an unclaimed consignment which is not perishable in nature, cause a notice to be served upon the consignee if his name and address are known, and upon the consignor if the name and address of the consignee are not known, requiring him to remove the goods within a period of seven days from the receipt thereof and if such notice cannot be served or there is a failure to comply with the requisition in the notice, sell such consignment in the manner provided in clause (b) of sub-section (2) of section 83.