When a package has been marked for identification by a notary public as required under the provisions of § 6.2-2306, it shall, in the presence of an officer of the company, be placed by the notary public in one of the general safes or boxes of the company. The lessee shall be liable to the company for storage of the package at a rental rate that does not exceed the original rental of the box that was opened. The package shall remain in such general safe or box for a period of not less than two years, unless sooner removed by the lessee.