- Original Government Packaging: $200 - $300
- Original Mint Packaging: $350 - $450
- Certified by PCGS or NGC: $650 - $1,000
The value of a 1964 U.S. proof coin set can vary depending on the condition of the coins, the packaging, and whether they have been certified by a reputable grading service such as PCGS or NGC.
Overall, the values provided above are just estimates, and the actual market value may differ based on specific factors and fluctuations in the market. It's always recommended to consult with a professional coin dealer or collector to get a more accurate assessment of the value of your 1964 U.S. proof coin set.