Pokémon Regulation Marks Explained (D, E, F, G, H, I…)
What the small letter on modern Pokémon cards means, how regulation marks set Standard format legality, and whether they affect a card's collector value.
By Ayoub Farid · · 2 min read
Modern Pokémon cards have a small letter in a box near the bottom left: D, E, F, G, H, I and so on. It's called the regulation mark, and it matters a lot to players and very little to collectors. Here's why.
What a regulation mark is
Introduced with Sword & Shield, the regulation mark shows which block a card belongs to. Each year, the Standard tournament format "rotates": older letters leave Standard, so only cards with recent marks are legal there.
Example: if Standard allows G, H and I, then cards marked F or earlier can only be played in the Expanded format (or casually).
Where to find it
Bottom left, near the set symbol and card number, in a small white box. Older cards (before Sword & Shield) have no regulation mark.
Does the regulation mark affect value?
For collectors, mostly no. Value comes from rarity, the Pokémon, the artwork and condition. A special illustration rare stays collectible after rotation.
For playable cards, yes, indirectly:
- Competitive staples (popular trainers, key Pokémon) often drop in price after rotation, when players no longer need them for Standard.
- Some get a second life in Expanded or casual formats.
If you hold playable cards for their value, consider selling before they rotate.
How rotation is announced
The Pokémon Company announces which marks are legal ahead of each season, typically in spring, with the change taking effect for the new season. Check the official Play! Pokémon rules for current dates.
Reprints and marks
When a card is reprinted, the new printing gets a newer mark and may be legal in Standard while the old printing isn't. That can shift demand between printings.
Regulation marks vs set symbols
Don't confuse the two. The set symbol tells you which expansion a card comes from (and therefore helps identify its value), while the regulation mark tells you which tournament block it belongs to. Several sets share the same regulation mark. When you look up a price, the set symbol and card number are what matter (set symbols).
Try it on your own cards
When you scan a modern card with Rarefolio, you'll see its estimated market value and price history. Watching the chart around rotation time shows how play demand affects prices. For collector value drivers, read rare Pokémon cards worth money and why card prices move.
Frequently asked questions
What does the letter on my Pokémon card mean?
It's the regulation mark, which shows which tournament block the card belongs to and whether it's legal in the Standard format.
Do regulation marks affect card value?
Not much for collectors. Competitive cards can drop in price after their mark rotates out of Standard.
Why don't my old Pokémon cards have a regulation mark?
Regulation marks were introduced in the Sword & Shield era; older cards don't have them.
Can I still use rotated cards?
Yes, in the Expanded format or casual games, depending on the card.