What this source establishes
⭐ THE OBJECT, AND IT OVERTURNS THE BOOKS. The bronze reads “Vve GRÉGOIRE, VALENCE (DRÔME)” with “…ATEUR CASIMIR GRÉGOIRE” (= DONATEUR). So the foundry is the widow Grégoire's of Valence in the Drôme — NOT Burdin of Lyon, which is what every paper account says and which the object refutes. The donor is confirmed by the bell he gave. This is a primary document made in France in 1861 by the people who cast it, which is why this dot is tiered documented.
This is as much of the book as this site prints. It is named in full in the bibliography below.