Every official notice of sale of bonds or notes shall provide that the right is reserved to the governing body of the local government unit to reject all bids or proposals, but in a case where conforming bids have been received, opened and rejected, any subsequent sale within a period of two calendar months of bonds or notes in substantially the same amount and for the same purpose must be a public sale to be held at such later time as the governing body may determine to be advantageous.
53 Pa.C.S. § 8167