(1) Where any part of the property of a company which is being wound up consists of land of any tenure burdened with onerous covenants, of shares or stock in corporations, or unprofitable contracts, or of any other property that is unsaleable, or not readily saleable, by reason of its binding the possessor thereof to the performance of any onerous act, or to the payment of any sum of money, the liquidator of the company, although he or she has endeavoured to sell or has taken possession of the property, or exercised any act of ownership in relation thereto, may, with the leave of the court and subject to the provisions of this section, by writing signed by him or her, at any time within 12 months after the commencement of the winding-up or such extended period as may be allowed by the court, disclaim the property; but where any such property has not come to the knowledge of the liquidator within one month after the commencement of the winding-up, the power under this section of disclaiming the property may be exercised at any time within 12 months after he or she has become aware thereof or such extended period as may be allowed by the court.