ABS Partners and Benenson Investment Co. have had a busy month, closing on three different properties —including the Hammacher Schlemmer Building. The partnership paid $62.75 million for the office-and-retail building at 145-147 East 57th Street. The Real Deal first reported ABS’ involvement in the sale in September. The previous owner, Grupo Victor Malzoni Investimentos, bought the property in 2010 for $34 million.