Certain instruments validated, notwithstanding lack of seals or witnesses, or defect in acknowledgment.

(1) Whenever any power of attorney has been executed and delivered, or any conveyance has been executed and delivered to any grantee by the person owning the land therein described, or conveying the same in an official or representative capacity, and has, for a period of 7 years or more been spread upon the records of the county wherein the land therein described has been or was at the time situated, and one or more subsequent conveyances of said land or parts thereof have been made, executed, delivered and recorded by parties claiming under such instrument or instruments, and such power of attorney or conveyance, or the public record thereof, shows upon its face a clear purpose and intent of the person executing the same to authorize the conveyance of said land or to convey the said land, the same shall be taken and held by all the courts of this state, in the absence of any showing of fraud, adverse possession, or pending litigation, to have authorized the conveyance of, or to have conveyed, the fee simple title, or any interest therein, of the person signing such instruments, or the person in behalf of whom the same was conveyed by a person in an official or representative capacity, to the land therein described as effectively as if there had been no defect in, failure of, or absence of the acknowledgment or the certificate of acknowledgment, if acknowledged, or the relinquishment of dower, and as if there had been no lack of the word “as” preceding the title of the person conveying in an official or representative capacity, of any seal or seals, or of any witness or witnesses, and shall likewise be taken and held by all the courts of this state to have been duly recorded so as to be admissible in evidence;

(2) Provided, however, that this section shall not apply to any conveyance the validity of which shall be contested or have been contested by suit commenced heretofore or within 1 year of the effective date of this law.