C.R.S. § 38-30-143

All deeds and conveyances of any real estate, formerly belonging to any town or city conveyed prior to April 4, 1947, by deed signed and acknowledged by the mayor and attested by the clerk with the official seal of any such town or city affixed, shall be deemed and held to be legal, valid, and binding conveyances of the real estate therein described in all respects and in the same manner as though said deeds or conveyances had been signed by a commissioner appointed for the purpose of selling and conveying the same on behalf of such town or city.