MEXICO. Silver Commemorative Proof Set (5 Pieces), 1988. GEM BRILLIANT PROOF.cf.KMX-PS2. Mintage: 1,000 sets. All exhibit varying degrees of attractive tone. With certificate of authenticity and original case of issue.1) 1/10 Ounce, 1988. cf.KMX-MS45.2) 1/4 Ounce, 1988. cf.KMX-MB46.3) 1/2 Ounce, 1988. cf.KMX-MB47.4) 1 Ounce, 1988. cf.KMX-MB48.5) 12 Ounces, 1988. cf.KMX-MB61.