The 1979-S Kennedy Half Dollar PCGS PR64 is a modern proof coin struck at the San Francisco Mint, notable for its two distinct proof varieties and the occasional appearance of striking “monster toned” colors like vivid orange, likely due to unique mint storage or environmental exposure. This coin is made of 91.67% copper and 8.33% nickel, with a weight of 11.34 grams and a diameter of 30.61 mm. The strike features a mirror-like finish with frosted design elements—President Kennedy’s bust and the heraldic eagle on the reverse.

Type 1 proofs are distinguished by a filled “S” mint mark, while the scarcer Type 2 shows a thin, clear “S.” The total mintage for 1979-S proof half dollars is 3,677,175 across both varieties, making them broadly collectible yet affordable in most grades except highest proofs and dramatic toning. PCGS PR64 indicates above-average proof quality, with few minor flaws, good luster, and sharp details, though not quite gem quality.

Monster-toned coins, especially with orange hues, appeal to enthusiasts for their unique appearance and natural color variation, adding a collectible premium. These features make a 1979-S Kennedy Half Dollar with exceptional monster toning not only a modern proof coin but also a standout display piece valued by both casual and advanced collectors.

Overall, a 1979-S Kennedy Half Dollar PCGS PR64 with vibrant orange toning is a visually remarkable and affordable proof coin that blends quality, historical relevance, and unique eye appeal in the Kennedy half dollar series.