Mo. Rev. Stat. § 140.450
Current with changes from the 2023 Legislative Session
When conveyances are delivered for lands sold for taxes the certificates therefor shall be cancelled and filed away by the collector; and in case of the loss of any certificate, on being fully satisfied thereof by due proof, or upon the production of a certified copy thereof, the collector may execute and deliver the proper conveyance, and file such proof in his office.
§ 140.450, RSMo
RSMo 1939 § 11153