53. Where not less than two-thirds of the value of an estate consists of immoveables and of shares in companies, the Minister of Revenue may permit payment of the duties exigible respecting such estate in four equal and consecutive annual instalments, provided that the person owing such duties applies therefor in the form prescribed by the Minister, within six months following the death of the person whose estate is concerned, and at the same time pays the first instalment of the duties and furnishes such security as the Minister considers sufficient to ensure payment of the three other instalments.
Interest on such instalments shall be computed in accordance with section 51.