From the Stowe 1848 Sale Catalogue.

441. A figure of a mounted knight armed for the tournament, suspended by a chain. This beautiful cinque-centro jewel is of gold, enamelled, and set with precious stones. Russell. 16 5 6. This very beautiful specimen of cinque-centro jewellery was brought by the late Duke of Buckingham from Florence. It is of gold, and the horse is covered with white enamel […]

451. A beautiful cinque-centro jewel of gold and enamel, with a phoenix and flowers, set with precious metals and pendant pearls. Garrad. 7 10 0. This was another beautiful specimen of cinque-centro art, brought from Florence by the late Duke of Buckingham. The phoenix is of white enamel, the feathers being marked out with gold, and the wing coverts slightly marked in red […] 

274. A jewel, designed for a benitoire, in the most exquisite taste, of the period of Cellini. The vessel for holy water is formed of a single aldamine, supported by two angels, of gold—enamelled: on the lid is a bust of the Virgin, and cameos, above is a relief of the Virgin, in a glory, supported by angels, with the Trinity above. The whole jewel is thickly studded with rose diamonds and turquoise. This beautiful work is of the most elaborate cinque-centro. Russell. 106 1 0. This very beautiful work of art was formerly among the crown jewels of Portugal, whence it was brought to this country by Dom Miguel. Although described in the catalogue as of the period of Cellini, the general character of the jewel appears to indicate that it is not so old a date by many years […] The disposal of this lot excited very spirited competition, but Mr Russell at length secured its possession for the amount quoted—a sum stated to be far below its real value.