Michigan Compiled Laws, Chapters 760 to 777 Code of Criminal Procedure § 773.18

Sec. 18. It shall be the duty of said county clerk to deposit the same with the county treasurer, who shall safely keep said money or property for the period of 2 years from the time of receiving the same, unless the same shall be called for by the heirs or proper representatives of the deceased person, in which case the said money or valuable property shall be delivered to them, but if at the expiration of said 2 years no demand for the same shall have been made, said county treasurer shall sell the same in such manner and after such notice as is required by law for constable sales, and shall within 10 days thereafter pay into the state treasury all the proceeds to be credited to the general fund of the state.