Noob question here. What does "graded" mean for coins? I have a couple of redeemed 2013 1BTC coins (sorry if considered off-topic) that I would consider selling but not sure if they are "graded" or not.
You can mail your coin to ANACS with a form and for about $50 they authenticate and give your coin a grade, usually from MS-63 to MS-68.
The higher the grade the higher the value, higher grades are rare because they are the best condition. Usually graded coins can sell for 2x or 10x the price.
If yours its redeemed, you cant get it graded, sorry.
This is an example: