1860 Liberty Seated Half Dollar. Proof-64 (PCGS).Smoky-lilac and steel-russet patina yields to more vivid undertones of antique gold, rose-red and cobalt blue as the surfaces dip into a light. Such viewing angles also reveal a universally reflective finish from the dies for this fully struck, handsome near-Gem. With no more than 600 or so of the 1,000 coins struck actually distributed to contemporary collectors, the Proof 1860 half dollar is surprisingly scarce in todays market.