BGS (Beckett) Centering Standards: Tolerances for Each Grade

How BGS Grades Centering

BGS uses a 1-10 scale with four subgrades: Centering, Corners, Edges, and Surface. The centering subgrade is especially important because it’s shown explicitly on the BGS label, making any off-center cards immediately apparent. The overall grade is influenced by the lowest subgrade, so poor centering can significantly impact a card’s final grade.

BGS Centering Tolerances by Grade

• BGS 10 (Pristine): Requires essentially perfect 50/50 centering on both the front and back of the card. Even slight shifts may prevent a card from achieving this grade.
• BGS 9.5 (Gem Mint): Typically allows for centering of roughly 55/45 or better on the front, and 60/40 or better on the back. This is among the strictest in the industry. BGS publishes these as general guidelines; always check their latest standards for specific card types or eras.
• Lower Grades: BGS does not publicly specify exact centering ratios for grades below 9.5. Cards with centering outside the 55/45 (front) and 60/40 (back) range will generally receive lower subgrades. Always confirm with BGS’s current published standards for your card set.

How to Measure Your Card's Centering

Accurately measuring centering is critical before submitting to BGS. The Midpoint app (iOS and Android) detects a card’s inner and outer borders from a single photo, calculates the exact front and back centering (e.g., 55/45), and helps you determine if your card meets BGS thresholds. This lets you avoid costly submission mistakes.

Remember: Centering Is Only One Subgrade

Even with perfect centering, your card’s overall grade also depends on corners, edges, and surface. Each subgrade is visible on the BGS label. Before submitting, inspect your card thoroughly and measure centering precisely to set realistic grading expectations.