How to grade One Piece cards: the complete guide
By Édouard Quere · Published on
Launched by Bandai in 2022, the One Piece Card Game has quickly become one of the most collected card games in Asia. Its alternate arts, Manga Rares and Leaders with special artwork sometimes sell for high prices.
Grading a One Piece card proves it is authentic, records its condition with a grade from 1 to 10 and protects it in a sealed slab. Here is how to choose the right cards and prepare them.
Why grade your One Piece cards
The game is recent: most cards were opened not long ago, and many are still in excellent condition. Now is the right time to lock in that condition before handling, heat and humidity take their toll.
- Authenticity: the most expensive cards are also the most copied. A graded card has been checked before being graded.
- Resale: a buyer sees the card's condition at a glance thanks to the grade, and can check the certificate online.
- Protection: the sealed slab protects the card from knocks, dust and fingers.
Which One Piece cards are worth grading
Any card can be graded, but not every card gains from it. The cards that gain the most value once graded are usually:
- Alternate arts (parallels): same number as the regular card, but different artwork and a special finish.
- Manga Rares: illustrated like a manga page, they are among the most sought-after cards in the game.
- SEC (Secret Rare) and SP cards: pulled in small numbers from booster packs.
- Alternate art Leaders, especially those of the most popular characters.
- Some promo cards (P) handed out at tournaments or events.
Commons (C) and uncommons (UC) are rarely worth the cost of grading, except for a personal collection or a card that means a lot to you. To decide, compare the sale price of the graded card, the price of the raw card, and the cost of grading: from 384 ฿ (≈ $11) per card at TGP.
Reading a One Piece card for your order
Each card has a code showing its set and number. This is the code to copy into your order:
- OP + digits for booster sets (for example OP01-120), ST for starter decks (for example ST01-001), P for promos.
- The rarity is printed next to the number: C, UC, R, SR, SEC, L (Leader), SP…
- An alternate art often has the same number as the regular version: add “alternate” or “Manga” to the card name.
- State the language: Japanese, English or other. The grade and the price are the same, and the language is shown on the label.
Defects to check before sending
Before sending a card, look at it under good light while tilting it. On One Piece cards, the most common defects are:
- Surface: the shiny and textured finishes of alternate arts easily show scratches, fingerprints and print lines.
- Centering: compare the left and right, top and bottom borders, on the front and the back. An off-center frame often costs half a point or more.
- Corners and edges: a small knock when opening the pack or a tight binder pocket is enough to mark them.
- Curling: with humidity, some shiny cards bow slightly. Store them flat, with silica gel packs.
Don't clean a card or try to flatten it before sending: rubbing or pressure can create new defects.
Watch out for fake One Piece cards
As with Pokémon, fake One Piece cards exist, especially Manga Rares, SECs and alternate art Leaders. Be careful if:
- The price is far below recent sales of the same card.
- The colors are dull or oversaturated, or the text looks blurry.
- The shiny finish or texture doesn't look like that of a card bought in a store.
- The seller refuses to send sharp photos of the front and back.
At TGP, authenticity is checked before any grade. If a card is confirmed counterfeit, we let you know and return it ungraded.
Preparing and sending your cards
Put each card in a soft sleeve, then in a toploader or semi-rigid holder. Place everything in a padded envelope or small box, and use tracked shipping.
- Price: from 384 ฿ (≈ $11) per card, for every set and every language.
- Turnaround: Standard 30 business days, Express 15 business days, VIP 24–48 business hours, not including delivery.
- Return: within Thailand by EMS (1–3 business days) and to neighboring countries by ePacket, with a tracking number.
Frequently asked questions
- Do you accept Japanese One Piece cards?
- Yes. We grade One Piece cards in every language, with the same criteria and the same price. The language is shown on the label.
- Can a Leader card be graded?
- Yes. Leaders are cards like any other: they are authenticated, graded on 4 criteria and sealed. Alternate art Leaders are among the most worthwhile to grade.
- How do I declare an alternate art or a Manga Rare?
- Copy the code printed on the card (for example OP01-120), then add “alternate” or “Manga” to its name. The number is often the same as the regular version.
- How much does it cost to grade a One Piece card?
- The same price as for every game: from 384 ฿ (≈ $11) per card, depending on quantity and speed. The price does not depend on the card's value.
Alternate arts, Manga Rares, SECs or Leaders: pick your best One Piece cards, check their condition, and have them authenticated, graded and sealed at TGP, from 384 ฿ (≈ $11) per card.
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