This massive 1971 silver medal commemorates the 450th anniversary of the founding of San Juan, Puerto Rico. One side features a deeply sculptured rendition of the traditional municipal coat of arms, showcasing the Agnus Dei—or Lamb of God—standing atop a rocky outcropping while resting its foreleg on a cross-topped banner, all surmounted by a prominent mural crown resembling a fortified castle wall and framed by a gracefully flowing ribbon. The opposing side displays an intricate, multi-layered architectural montage centered on the historic San Juan Gate nestled among tropical palm trees, surrounded by four distinct circular vignettes highlighting the city's prominent colonial landmarks and historic facades. Struck in deeply antiqued .999 fine silver by the Medallic Art Company of New York, as denoted along the thick lower edge, this substantial piece boasts an impressive Actual Silver Weight of nearly 4.4 ounces, serving as a magnificent medallic tribute to the rich architectural and cultural heritage of Puerto Rico's capital. There were only 500 minted