The 1861 Proof Three Cent Silver is a popular Civil War date in the series with a mintage of 1,000 coins. It is more common up through PR64 but gains some scarcity in PR65. PR66 and finer gems are considered very rare as there are significant increases in value following PR65. Cameo pieces are far more difficult to locate in all grades. Look for attractive toners as there are many in this series.