At a mintage of 2,740, the 1890 proof Indian Cent makes for a great type coin. Brown pieces are common along with red-brown; only the finest gems are scarce. Full red gems are scarce as well, with the finest ones being very rare. Any grade with a cameo is, at a minimum, scarce with high Mint State grades being rare. Look for beautifully toned brown pieces or blazing red surfaces as those are the most desirable and are not too tough to find.