The note, which features a depiction of Gorda as the model for Mexico's iconic species of salamander, went into circulation in 2021, dazzling the judges of the International Bank Notes Society, who declared it the Note of the Year. Four years later, the Bank of Mexico has released a report revealing that 12.9 million Mexicans are holding on to this note as if it were worth more than just its value of 50 pesos, or a little under $3.