Me. Rev. Stat. tit. 33, § 1053

A finder of lost goods of the value of $10 or more shall, within 2 months after finding and before using the lost goods to the disadvantage of the owner, procure a warrant from the town clerk or a notary public, directed to 2 persons appointed by the clerk or notary, not interested except as inhabitants of the town, returnable at the clerk's office within 7 days from the date of the warrant, to appraise the goods under oath.