Watch List notes:

World Medals, Vatican, Benedict XIV (1740-1758), Prospero Lorenzo Lambertini, Memorial in the Vatican to Princess Maria Clementina Sobieska, wife of James [III], the Old Pretender, 1743 (Year 3), by Ottone Hamerani, bust of Pope right, in cap and cope, rev. the monument in the Vatican, 34.5mm. (MI.570/204; Woolf 45:2; Eimer 570; Lincoln 1812; Bart.743), extremely fine
The monument, erected at the expense of the Reverenda Fabbrica di S. Pietro, was designed by Filippo Barigioni. The figures were sculpted by Pietro Bracchi; the mosaic by Pietro Paolo Cristofari based on an oil painting by Ignaz Stern, whilst the gold decoration was the work of Francesco Giardoni.