HOW TO GRADE BASEBALL CARDS YOURSELF

Grading baseball cards requires an understanding of the various factors that determine a card’s condition and assessing how much each factor detracts from the card’s perfection. The two most common grading scales used are the 1-10 Generic Scale and the Professional Letter Grade (PLG) scale used by professional grading companies like PSA and BGS.

On the 1-10 scale, a perfect mint card fresh from a pack would grade as a 10. As damage, wear and other flaws increase, the grade goes down. A very worn card in poor condition might grade as a 1 or 2. The PLG scale uses letter grades from gem mint (GM/MT) to poor (PR) to assess condition.

When self-grading, the first step is to closely examine the card under good lighting for any flaws, scratches, stains, spots, wrinkles or edge issues that detract from its condition. Use a loupe or magnifying glass to inspect for tiny flaws. The front of the card generally matters more for the grade than the back.

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Centering is very important – how perfectly centered the image is within the borders of the card. Slight off-centering might deduct 0.5 on the 1-10 scale, while severe off-centering could lower the grade by over 1 full point. Corners are also crucial – are they sharp, slightly rounded or significantly damaged? Minor corner wear may subtract 0.25, while seriously rounded or bent corners could drop the grade by over 0.5 points.

Edges are the next area to analyze. Are they crisp and cleanly cut, slightly wavy or damaged? A lightly wavy or slightly scratched edge could lower the grade by around 0.25 points. Heavily damaged edges or those missing large chunks of material would impact the grade much more severely. Surface issues like scratches, specks, stains or spots are then evaluated for size, depth and amount of distractions caused on the surface of the card.

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Light superficial marks might lower the grade 0.1-0.25 points each, while deeper or more prominent issues could decrease it 0.25-0.5 points apiece depending on severity and amount. Multicolored printing, foil stamping, embossing or other special treatments on the card are also scrutinized for consistent coloring, smudges and other potential flaws.

The back of the card is then graded using similar criteria – centering within the border, condition of edges and surface issues. Generally, imperfections on the back impact the grade to a lesser extent than front issues, often decreasing the grade by around 0.1 points less. Pack/manufacturer freshness is also a consideration, particularly for vintage cards – do they exhibit proper age/handling lines that match the expected vintage?

Once all attributes are assessed individually, an overall numeric grade is assigned based on the card’s collective flaws relative to a pristine specimen. Records should be kept of each area inspected and notes on how much each flaw or attribute lowered the grade. This allows for consistency if the card is ever re-graded. Professional grading companies use similar standards but with more high-tech tools and expertise to determine that extra 0.1 point difference on tightly graded modern rookie cards.

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By following these steps and standards, one can self-grade baseball cards in a detailed, uniform manner that aligns well with professional services. The key is close, methodical observation of each aspect that influences condition and how much each flaw lowers the final numeric assessment. With regular practice of a variety of different cards, self-grading skills will improve. Always handle cards carefully and use protection to maintain or ideally even improve that self-assigned grade over time.

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