The 1891 Liberty Seated Dime in MS 64 is a coin from the Liberty Seated Dime series, which was minted from 1837 to 1891. Here's a detailed breakdown:

The 1891 Liberty Seated Dime features the iconic design of Liberty sitting on a rock, holding a shield and an olive branch on the obverse. The reverse shows an eagle with a shield, holding arrows and an olive branch. The Liberty Seated Dime series is one of the most popular and long-running dime designs in U.S. history.

The MS 64 grade indicates that this coin is in excellent condition, with minimal wear and only light marks or contact abrasions visible under magnification. The coin retains much of its original luster and fine detail but shows a few minor imperfections that prevent it from achieving a higher grade, such as MS 65 or MS 66.

The CACG is likely a typo or confusion for CAC (Certified Acceptance Corporation). If the coin has received a CAC sticker, it means that the coin has been reviewed and meets a higher standard of quality for its grade compared to other coins in the same MS 64 category. A CAC sticker typically adds value and desirability to the coin, as it assures collectors that the coin is a premium example of its grade.

In summary, the 1891 Liberty Seated Dime MS 64 with a CAC sticker would be an excellent choice for collectors who appreciate high-quality examples of this historic coin, and the added CAC certification ensures its desirability in the market.