Pcgs Liberty

What is the difference between a PCGS certified American silver liberty dollar and one that is not certified?
I want to invest in the uncertified silver liberties, but before I do, I need to know this answer. Why does it matter that one coin is certified and the other not certified? Why is there a higher premium paid for a certified coin, when they are essentially the same coin?
The ungraded coins are not as pristine as the graded coins. The higher the grade the more unhand-led they are and more they are in detailed condition as they were struck. The ungraded coins carry a premium but not as much because they are more worn then the graded coins.
I do not collect graded coins. Unless you are a serious collector then the extra money paid for the premium is not worth the extra investment as the premiums can fluctuate more then the metals price the coins are based upon.
The grading basically certifies the perfection or lack thereof of the striking of the coin.
1909-S Indian Penny Lady Liberty, PCGS MS64RB