((a)) Any realty or interest therein sold under any order or decree of any court of the United States shall be sold as a whole or in separate parcels at public sale at the courthouse of the county, parish, or city in which the greater part of the property is located, or upon the premises or some parcel thereof located therein, as the court directs. Such sale shall be upon such terms and conditions as the court directs.

((b)) After a hearing, of which notice to all interested parties shall be given by publication or otherwise as the court directs, the court may order the sale of such realty or interest or any part thereof at private sale for cash or other consideration and upon such terms and conditions as the court approves, if it finds that the best interests of the estate will be conserved thereby. Before confirmation of any private sale, the court shall appoint three disinterested persons to appraise such property or different groups of three appraisers each to appraise properties of different classes or situated in different localities. No private sale shall be confirmed at a price less than two-thirds of the appraised value. Before confirmation of any private sale, the terms thereof shall be published in such newspaper or newspapers of general circulation as the court directs at least ten days before confirmation. The private sale shall not be confirmed if a bona fide offer is made, under conditions prescribed by the court, which guarantees at least a 10 per centum increase over the price offered in the private sale.

((c)) This section shall not apply to sales and proceedings under Title 11 or by receivers or conservators of banks appointed by the Comptroller of the Currency.