If an assessor increases the valuation of any tangible personal property as estimated in the itemized list furnished to the assessor, and if an assessor increases the valuation of any real property, he shall forthwith notify the record owner of the increase either in person or by mail directed to the last known address, and if the address of the owner is unknown notice shall be given by publication in two newspapers published in the county.

(L. 1945 p. 1930 § 7, A.L. 1959 H.B. 108)