A joint venture between David Werner Real Estate Investments and developer Sam Fisch Development has secured $61 million of acquisition financing for a Lower Manhattan office asset that’s slated for a potential residential conversion, Commercial Observer has learned.Real estate investment firm 99c provided a $41 million acquisition and pre-development loan for 266,639 square feet of the upper floors of 5 Hanover Square. Deutsche Bank also supplied a $21 million acquisition loan for five lower floors in the building in a condominium unit occupied by the The Ideal School of Manhattan.