A sale made by mistake, or not in accordance with law, or obtained by fraud, is void, and the certificate issued on it is void. The holder of a void certificate must surrender it to the commissioner who, except in cases of fraud on the part of the purchaser, shall refund to the holder the money paid on the sale.
Minn. Stat. § 92.20
(6290) RL s 2425; 1985 c 265 art 3 s 1