Bougeoir ancien doré au chérubin, style Rococo français, Belle Époque

No, I would not be certain from the information shown. The description says "gilt brass finish", but that appears to be your own listing text, not a manufacturer's mark or a confirmed material analysis. From the photos provided, I can see: A gold-colored metal surface. Areas where the finish is worn, revealing a copper-colored tone underneath. Significant patina and age wear. That is consistent with: Gilt brass (most likely). Bronze with gilding. Spelter (regule) with a gilt finish. Another copper alloy with gilding. For Selency, if you are not 100% sure, I would avoid stating "laiton" as a fact. Safer options: Title: Bougeoir ancien doré au chérubin, style Rococo français, Belle Époque. Material: Métal doré. Description: Bougeoir ancien en métal doré représentant un chérubin dans le goût Rococo. La finition dorée présente une usure naturelle laissant apparaître par endroits une teinte cuivrée et une belle patine d'ancienneté. If the piece is heavy for its size (490 g at 23.5 cm) and is not magnetic, brass or bronze becomes more likely. If you have a close-up photo of the underside, the candle socket, and any unpainted area, I can give a more informed opinion on the material.