Clement XIII, Carlo Rezzonico of Venice. Pope from 1758 to 1769. Works to restore the navigability of the Tiber river. Silver annual medal 1763 Year V. By Ferdinando Hamerani. (Silver, 38.83 mm, 23.31 g). CLEMENS XIII PONT M A V Bust left with tiara and cope decorated with floral spirals; on the shoulder cut, HAMERANI. Rev. NAVIGATIONE TYBERIS RESTITVTA The Tiber seated right, holding oar and cornucopia, leans on a vase from which water comes out; next to him, the capitoline She-Wolf; in the background, the course of the river; in exergue, 1763. Modesti 2007, 241. Bartolotti 1967, 763. Patrignani 1939, 16. Mazio 491. Attractive iridescent old cabinet tone. Small edge nicks resulting from a previous mounting, otherwise, Nearly Uncirculated. Only 418 silver specimens minted. Very rare. Ex Tkalec, May 7, 2008 part II, lot 547.