20 Centavos large type

This issue belongs to the second generation of Mexico's post-1993 redenomination coinage, introduced as the country shed three zeros from the peso following years of chronic inflation that had rendered small denominations functionally worthless. The "large type" designation distinguishes it from a physically smaller successor variety — a relatively uncommon situation where the smaller coin came later rather than earlier, driven by vending machine standardization pressures in the early 2000s.

Aluminium bronze was chosen for its resistance to corrosion in tropical circulation conditions and its visual durability under heavy use.