A. He obtains property of another which he knows to have been lost or mislaid, or to have been delivered under a mistake as to the identity of the recipient or as to the nature or amount of the property, without taking reasonable measures to return it to the owner; and

B. He has the purpose to deprive the owner of the property when he obtains the property or at any time prior to taking the measures designated in subsection A of this section. (Code 1975 § 13-640-7)