From August 15th, 2024 to September 30th, 2024, patrons of the US, Canada, and UK Pokémon Centers that spend $50/£50 pr more, can receive a 2024 Pokémon World Championships Commemorative Coin with their order by using the codes:

coin24us in the United States
coin24ca in Canada
coin24uk in the United Kingdom

Celebrate Worlds 2024 with a Commemorative Coin!

Celebrate the 2024 Pokémon World Championships with a unique commemorative coin that's exclusive to Pokémon Center!

• Available from Pokémon Center in the US, Canada, and UK
• Preorders and digital products are not eligible for this offer
• A fee of $8 USD or $8 CAD will be applied to US and Canada returns regardless of whether the promo coin is included in the return. UK returns must include this Worlds coin to be eligible for a refund.
• UK customers must be 18 years or older.
• Limit one Worlds coin per order.
• Item Dimensions: 1.8 IN
• Country Of Origin: Made in China
• Materials: silver-plated zinc alloy
• SKU: 720E13055

Source: https://www.pokemoncenter.com/product/720E13055/2024-pokemon-world-championships-coin