Collectible coins include various types such as numismatic coins, which are valued for their rarity and historical significance, and bullion coins, which are valued primarily for their metal content. In the context of American coinage, coins from specific minting locations like Sacramento in 1850 can carry significant historical value. The G 36 55 cataloging reference likely pertains to a specific coin type or designation, and F D Kohler could refer to a noted individual in numismatics or a collector's mark. Collectors often seek these coins for their investment potential and the story behind their creation.