Every instrument of conveyance, effecting a transfer of title to real property or interest therein, located in the City, shall set forth as part of such instrument the full, complete and actual consideration for the transfer of real property described therein, or shall be accompanied by a certificate of any attorney at law or an affidavit executed by a responsible person connected with the transaction showing such connection and setting forth the true, full, complete and actual value thereof and if the privilege of making such transfer is not taxable hereunder, the facts by reason of which such nontaxability exists. Every transaction subject to the realty transfer tax under Act 77, 72 P.S. § 8101-D et seq. of the General Assembly of the Commonwealth of Pennsylvania, approved July 2, 1986, shall be subject to the tax herein imposed.