MEXICO. Sombrerete. Charles IV Silver Proclamation Medal, 1791. Sombrerete Mint. PCGS MS-63. Grove-C-215. Obverse: Uniformed bust right; Reverse: View of la Bufa mountain. A <strong>VERY SCARCE</strong> proclamation medal, this example generates much enthusiasm one account of the attractive slate gray patina and sharp luster throughout. An example that will capture the attention of many specialists in proclamation medals.