Mexico. Silver Proclamation Medal, 1823. Grove-13a. 33mm. By J. Guerrero. Augustin I Iturbide. Obv. Crowned eagle, with wings spread, draped banner below. Reverse; Five line inscribed legend on shield within wreath of laurel branch and palm frond. Light gray tone with underlying original luster. PCGS graded AU-55. Estimated Value $300 - 400