My proposal is to change the 100 pesos coins issued between this years which are currently classified as Non Circulating Coins to Circulating Commemorative Coins. This coins are.-
-180th Anniversary of Federation.- 1st & 2nd Series
-200th Anniversary Birth of Benito Juarez Garcia
-Bank of Mexico's 80th Anniversary
-Mexico City Mint's 470th Anniversary
-Monetary Reform Centennial
-400th Anniversary of Don Quijote de la Manchia
All these are Bimetallic with .925 silver centre in aluminum-bronze ring; and cause, althoug rare in circulation, these where put in circulation by BANXICO and the non circulating special editions were made in pure .999 silver and in bimetallic .999 gold centre and .999 silver ring. As you can see in this press releases by Banxico, the bimmetallic silver and aluminum-bronze, were made for circulation.-
Quixote.-
-https://www.banxico.org.mx/publicaciones-y-prensa/relacionados-con-monedas/%7B0CA775C8-488B-660C-FFBF-2F2B0A325CDE%7D.pdf
Juarez.-
-https://www.banxico.org.mx/publicaciones-y-prensa/relacionados-con-monedas/%7BD7C048F7-24A3-E453-B3D4-922E1F230FD1%7D.pdf
Bank of Mexico's 80th Anniversary, Mexico City Mint's 470th Anniversary and Monetary Reform Centennial.-
-https://www.banxico.org.mx/publicaciones-y-prensa/relacionados-con-monedas/%7B1330CEAE-A4A8-3010-02A5-DC480A4DBEE8%7D.pdf
Some of the 180th Anniversary of Federation.-
-https://www.banxico.org.mx/publicaciones-y-prensa/relacionados-con-monedas/%7BE480BB56-816C-0E9D-5FAC-4A4FC1BA1851%7D.pdf
-https://170.70.115.76/publicaciones-y-prensa/relacionados-con-monedas/%7B1F8DA3C8-8528-E61A-BB5F-2743264101A1%7D.pdf
-https://www.banxico.org.mx/publicaciones-y-prensa/relacionados-con-monedas/%7B910804AA-66F3-4431-1A1D-6A7D4A72ABC6%7D.pdf
-https://www.banxico.org.mx/publicaciones-y-prensa/relacionados-con-monedas/%7BEFCE61ED-A868-42AE-62E4-185ED4A67F21%7D.pdf
Or as you can also see in this page by banxico of which circulating coins are in the process of being retired .-
-https://www.banxico.org.mx/billetes-y-monedas/monedas-en-proceso-retiro-c-p.html