Beckett Grading Service (BGS) is NOT an Average

One misconception a lot of people have with Beckett Grading Services (BGS Grading) is that the "formula" is an average.

Here's a tip:  BGS does not use an average. 

I've covered the basics of the BGS forumla in this previous blog post. 

BGS gives more weight to your lowest sub-grade(s) than your higher sub-grades.  For example, if a card has sub-grades of Centering 9.5, Corners 8.5, Edges 8.5, and Surface 9.5, the final grade will be NM/Mint+ 8.5 and not a final grade of 9.0 which is the average.

Centering 9.5
Corners 8.5
Edges 8.5
Surface 9.5

Average = 9.0
BGS Final Grade: 8.5

Remember, if two of your subgrades share the lowest subgrade score, then your final grade will be equal to that lowest subgrade.