"PL" in coin grading means "prooflike". It is used to describe a coin that has mirror fields and fine details resembling a proof struck coin but is not a true proof.
Proof
Well, I believe what they mean is that it is the 5th VAM designation of your coin's year (VAM designations are die varieties found in Morgan Dollars, some are worth a lot more than others) and the 63 I believe would refer to the coin's grade as Mint-state 63 (coins are graded on a scale from 1 being barely recognizable to 70 being absolute perfection) and PGS is the grading company that graded the coin.
It depends on what type of coin, year struck, how many have been certified and who graded it. Just because a coin has been graded as a perfect Proof or Mint State example does not mean one type is more valuable than the other.
In numismatic terms. MS-63 is a grade (MS-60 to MS-70), meaning Mint State-63 or Choice Uncirculated. A coin that is certified as MS-63 has graded by a professional coin grading company.
MS stands for "mint state," which is a coin grading termand the number 66 is on a scale of 1 to 70. The grade MS-66 means the coin is in nearly flawless condition.
Proof
Mint status
Lots of wear on the coin and the lowest grading possible.
Original Government Packaging
Less than good. The lowest grade.
PR is a grading system used for proof coins
it means that a porfecinal has authenticated and determaned the codition of a coin
Professional Coin Grading Service was created in 1986.
For an informal grading, bring it to a coin dealer for an on-site appraisal. For an official grading, it needs to be sent into a professional grading service.
yes
A slabbed coin is a coin that was graded by a grading service. There are many grading services out there. You can use google to find some of them. Having a coin graded can give you the exact value and therefore is easier to determine its value.
DCAM stands for Deep Cameo and is reserved for proof coins