That's hard to tell. The Portuguese Royal Family was exiled until 1950 but only in 1953 could return to Portugal. However the Family was not allowed by the regime to have the visibility that has today, for example. To complicate the things HRH the Duchess D.Maria Francisca died very young (53 years). So we don't have much information to compare jewels in order to know if they are recent or heirlooms. Because of that, there is usually much mystery around the Braganza jewels.