§ 106. Joint seal. The regents of the university upon the recommendation of the commissioner of education shall adopt, and may modify at any time, a seal, which shall be used in common as the seal of the education department and of the university; and copies of all records thereof and of all acts, orders, decrees and decisions made by the regents or by the commissioner of education, and of their official papers, and of the drafts or machine copies of any of the foregoing, may be authenticated under the said seal and shall then be evidence equally with and in like manner as the originals.