Mo. Rev. Stat. § 313.300
Unclaimed prize money shall be retained by the commission for the person entitled thereto for one year after the time at which the prize was awarded. If no claim is made for the prize within such year, the prize money shall be reverted to the state lottery fund.
(L. 1985 S.B. 44 § 21, A.L. 1988 S.B. 643)
Effective 9-1-88