The orignal model for the present clock was supplied by Gérard-Jean Galle (d. 1846) to the Royal Palace in Stockholm in 1823 (see H. Ottomeyer and P. Pröschel, Vergoldete Bronzen, Munich, 1986. p. 397, fig. 5.18.12). Other similar examples may be found in the Prado and at Malmaison. An earlier version, without clock movement, was acquired in 1814 by Ferdinando III and may be found in the Palazzo Pitti, Florence (see M. Chiarini and S. Padovari, Gli Appartamenti Reali di Palazzo Pitti, Florence, 1993, p. 230, fig. II.39).