How to Check Card Centering Online on Borderless and Full Art Cards

1. Shoot both sides flat

   Photograph front and back on a dark mat with the phone parallel to the card. Take the card out of its sleeve if you can; glare hides the anchors you need.

2. Measure the back

   Upload the back, flatten it with the four corner handles and set the eight lines on the cut edge and the printed back border.

3. Anchor the front

   Upload the front, keep the outer lines on the cut edge and put each inner line on the most reliable straight printed feature on that side.

4. Cross-check

   Compare both sides in the lamp matrix. If an anchor reading looks wrong, switch to Manual mode and type the four margins in mm from a ruler or caliper.

The back of a full art card usually carries the same printed border as any other card in the set, so it measures like a normal card. Doing it first settles the 75/25 half of the PSA 10 rule before you face the harder side. A back already past 75/25 ends the question, because no front reading can rescue it.

With the back done, the front has to answer one question: is the image within 55/45 of the cut edge? The flow figure shows the order: back first, then anchor the front, then read both together in the lamp matrix, which combines the two sides into one ceiling per company, from PSA 10 down to grade 5.

Each side keeps its own eight lines, so you can switch between front and back without losing work. The back also feeds the P10 model: its factor stays at 1 up to 70/30, falls to 0.5 at 75/25 and reaches 0 at 76/24. A 71/29 back costs a tenth of the gem odds even when it passes.

An anchor is any printed edge that runs parallel to the cut edge and was laid out square to the card. On full art faces the best are the text box edge, the bottom info bar edge and any remnant of a printed frame line near the corners. Put the inner line on that edge and measure to the cut on each side.

Use the same kind of anchor on opposite sides: info bar left edge with info bar right edge, never a text box on one side and artwork on the other. Art itself, like a horizon or a character outline, makes a poor anchor because it was never drawn square to the card. Foil texture lines work only when they run straight across the whole face.

Two different anchors on the same card should agree within a few tenths of a point. If the text box gives 54.2 and the info bar 54.6, take the worse number when you decide whether to submit. If they differ by more than a point, one of them is not square to the card or the photo is still skewed.

Tilt makes the near side of the card bigger than the far side, so the border on the near side reads wider. Measured on this site's specimen model, a true 52/48 card shot at 12° reads 61/39 straight across the photo: nine points of drift and a PSA 8 ceiling instead of PSA 10. The table lists 0°, 5°, 8° and 12°.

Full art cards make the error harder to spot, because there is no printed border to look visibly crooked. Keep the phone parallel to the card, fill the frame, and let the four corner handles correct the rest. The raw and corrected readings sit side by side; when they differ by several points, re-shoot from a squarer angle.

The correction depends on the corner handles sitting on the true card corners. On rounded corners they are fitted from the four straight edges, so check each handle under the loupe. If the lines still look skewed after the warp, the rotation input trims ±5.0° in 0.1° steps before you place the inner lines on your anchors.

Some faces have no straight printed edge anywhere. For those, measure with a ruler or caliper and switch the home tool to Manual mode. Type left, right, top and bottom in millimeters, from 0.00 to 20.00 with two decimals, or switch the unit to pixels. The ratios, lamps and Net EV update as you type.

Example: left 3.20 mm, right 2.60 mm, top 3.00 mm and bottom 3.10 mm give 55.2/44.8 left to right and 49.2/50.8 top to bottom. The front worst axis is 55.2, amber on PSA 10. Manual mode acts on the current side, so switch to the back and type its margins to get the combined ceiling.

Manual values are prefilled with the current measurement whenever you switch a specimen or photo, so you can start from a photo reading and correct one side by hand. A caliper reads to 0.01 mm, and on a 3 mm margin that step moves the share by less than 0.1 point, plenty for the 55/45 line.

Full art and alternate art cards often have dark or foil edges, which is where the Corner Whitening Index works best: white specks stand out against dark ink. Check all four 400% loupes, since a single 2.0% corner lowers the corner factor to 0.8. White-bordered backs read n/a, so inspect those corners by eye.

Then run the numbers. The P10 model treats an anchored front the same way it treats a bordered one, so a 53/47 front read from the info bar and a 71/29 back produce the dual specimen's 48.6% P10. Enter raw, PSA 10 and PSA 9 prices, or open the PSA 10 calculator for worked examples.