Circular 4/2026 — Circulation of a $20 Coin Commemorating the 2026 FIFA World Cup, Monterrey

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CIRCULAR 4/2026 Mexico City, May 13, 2026. SUBJECT: Circulation of a $20 coin, commemorative of the 2026 FIFA World Cup, Monterrey.

TO CREDIT INSTITUTIONS:

The Bank of Mexico, based on the provisions of articles 28, paragraphs seventh and eighth, of the Political Constitution of the United Mexican States; 2nd, 3rd, fraction I, 4th, 24, paragraphs first and second, and 25 of the Bank of Mexico Law; 48 of the Credit Institutions Law; 1st, 4th, paragraphs first and fourth, 8th, paragraphs fourth and eighth, 10, paragraph first, 16 Bis, fraction II, and 17, fraction I, of the Internal Regulations of the Bank of Mexico; Second, fractions III and X, of the Agreement on the Affiliation of the Administrative Units of the Bank of Mexico; as well as the “DECREE establishing the characteristics of nine different commemorative coins for the 2026 FIFA World Cup, organized by Mexico-United States-Canada” (hereinafter, “Decree”), published in the Official Gazette of the Federation on June 6, 2025, has resolved to put into circulation a twenty-peso commemorative coin for the 2026 FIFA World Cup, organized by Mexico-United States-Canada, of current strike, which will coexist with the twenty-peso banknotes and metallic coins currently in circulation. This coin will be identified with the following key:

Key Description 959 Twenty-peso coin commemorative of the FIFA World Cup -Monterrey

Credit institutions must make their deposits at the Bank of Mexico, in accordance with what is established in Chapter VI, of Title III, of Circular 3/2025, Provisions on cash operations, correspondent banking, and handling of presumably counterfeit or altered pieces, separating the aforementioned new commemorative coin from those with key 810, which are circular in shape, have a diameter of 32.0 mm (thirty-two millimeters) and a total weight of 15.945 grams, which differ from the aforementioned commemorative coin.

Likewise, it is important to reiterate that, as of August 8, 2022, the Bank of Mexico may deliver in withdrawals of twenty-peso metallic coins Type “C1” with dodecagonal shape, indistinctly, those with key 941 and whose content per bag is 500 pieces, or those with key 959, whose content per bag will be 700 pieces. Therefore, credit institutions may make their deposits at the Bank of Mexico combining

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commemorations in bags of 700 pieces. This, without combining dodecagonal coins with those of circular shape.

In accordance with the Decree, as well as with the design determined by this Issuing Institute, the new coin will have the following characteristics:

I. Nominal value: $20.00 (twenty pesos 00/100 M.N.). II. Shape: Dodecagonal. III. Diameter: 30.0 mm (thirty millimeters). IV. Composition: The coin will be bimetallic and will consist of two alloys, one for its central part and another for its peripheral ring, as follows:

1. Central part of the coin: Silver-colored alloy, composed as follows: a) Content: 65% (sixty-five percent) copper; 10% (ten percent) nickel, and 25% (twenty-five percent) zinc. b) Content tolerance: 1.5% (one, five tenths percent) per element, plus or minus. c) Weight: 5.51 g (five grams, fifty-one centigrams). d) Weight tolerance per piece: 0.22 g (twenty-two centigrams), plus or minus.
2. Peripheral ring of the coin: Aluminum-bronze alloy, integrated as follows: a) Content: 92% (ninety-two percent) copper; 6% (six percent) aluminum, and 2% (two percent) nickel. b) Content tolerance: 1.5% (one, five tenths percent), per element, plus or minus. c) Weight: 7.16 g (seven grams, sixteen centigrams). d) Weight tolerance per piece: 0.29 g (twenty-nine centigrams), plus or minus.
3. Total weight: It will be the sum of the weights of the central part of the coin and its peripheral ring, corresponding to 12.67 g (twelve grams, sixty-seven centigrams), and the weight tolerance per piece will be 0.51 g (fifty-one centigrams), plus or minus. V. The dies will be: Obverse: The National Coat of Arms, with the legend "ESTADOS UNIDOS MEXICANOS", forming the upper semicircle.

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Reverse: The Fuente El Crisol, one of the most emblematic of the Santa Lucía promenade and the Cerro de la Silla with a soccer ball in a net. On the upper contour, the legend COPA MUNDIAL DE LA FIFA 2026 TM. On the lower contour, the graphic identity defined by FIFA to represent the city of Monterrey and the legend PASEO SANTA LUCÍA. Included are the FIFA 26 MONTERREY TM logo; the denomination and the mint mark of the Mexican Mint “M°”. As security elements, the microtext MÉXICO TRIPLE SEDE MUNDIALISTA and the latent image with the silhouette of the Mexican Republic. VI. Edge: Discontinuous reeding. VII. Security elements: Latent image and microtext, in accordance with the description of the reverse of the coin, which must be related to its motif.

Finally, this circular will enter into force on this same date.

Sincerely,

BANK OF MEXICO MARÍA TERESA MUÑOZ ARÁMBURU Director of Central Bank Regulations LUIS MARIO DOMÍNGUEZ HERNÁNDEZ Regional Cashier Center