However, these are assumptions made in relation to the work carried out for the queen's burial, which is detailed in known archives, unlike the ceremonies for the transfer of her heart.

It is encircled by inscriptions in gold letters enhanced with green, blue and red enamel, in praise of Anne's heart.

[3] These inscriptions can be seen on both hulls:[1][note 1] De fin or pur et munde Repose ung plus grand cueur Que oncque dame eut au munde Anne fut le nom delle En France deux fois royne Duchesse des Bretons Royale et Souveraine.

[1] Dark stains, visible on the sides of the jewel case, are due to the transfer of iron and lead from the metal boxes that contained it.

[1] Philippe de Montauban [fr], a faithful advisor, was entrusted with the transfer: he sealed the jewel case and took charge of bringing it back to Nantes.

[6] On 25 December 1793, in response to an instruction from the National Convention, the reliquary was once again exhumed, emptied and seized as part of the collection of precious metals belonging to the churches, and sent to the Nantes Mint to be melted down.

Recognized as a “monument to science and the arts”, it was preserved and transferred to the Cabinet des Médailles of the Bibliothèque nationale de France.

[9] Also on this occasion, the jewel case was digitized in 3D and analyzed by X-ray fluorescence spectrometry at the Archeosciences laboratory of University of Rennes.

This analysis revealed that the two shells were almost 90% gold, the letters 85%, the cordelière 85% and its knots 80%, with silver and copper completing the alloy to reduce the object's malleability.

[5][10] The work was created for the exhibition La Bretagne au temps des ducs, held at Daoulas Abbey (Finistère) from 15 June 1991 to 6 October 1991.

[15] The security of the Musée Dobrée was immediately called into question, including by the “Association Historique du Pays de Campbon”.

[18] On 20 April 2018, three men were taken into custody on the premises of the Nantes judicial police and were due to be presented to an examining magistrate the following morning, with a view to a possible indictment.

[19] Aged 23 and 25 and originally from the department - one was arrested in Saint-Nazaire, while the other, already known to the law for theft, presented himself to the police - these two suspects do not appear to be part of an organized group, accustomed to this type of operation.

[20] The reliquary and other stolen objects were found by police on 21 April, “apparently in good condition” according to the Nantes public prosecutor, buried in a wooded area of Saint-Marc-sur-Mer in the commune of Saint-Nazaire.

[21] After three weeks in custody, one of the two suspects, who helped recover the stolen items, was released on 14 May 2018 and placed under house arrest at his home under an electronic anklet.