1. 1964 Lincoln Memorial Penny (No Mint Mark):
- Common Date: In circulated condition (well-worn), a common 1964 penny without a mint mark is worth around 1-2 cents.
2. 1964 Lincoln Memorial Penny (D Mint Mark):
- Denver Mint: Common 1964 pennies minted in Denver (with a "D" mint mark below the date) are also valued at around 1-2 cents in circulated condition.
3. 1964 Lincoln Memorial Penny (P Mint Mark):
- Philadelphia Mint: Philadelphia Mint pennies from 1964 (marked with a "P" below the date) are slightly more valuable. In circulated condition, they're worth around 3-5 cents.
4. Uncirculated and Mint State:
- Uncirculated: If a 1964 penny is in uncirculated condition (showing no signs of wear) and has good eye appeal, it can be worth anywhere from 10 cents to several dollars, depending on the specific grade and preservation.
- Mint State: A 1964 penny in Mint State (MS) condition, with no visible imperfections and original mint luster, can be even more valuable, potentially reaching tens of dollars or more.
Please note that the values mentioned are approximate and can fluctuate based on market conditions and collector demand. Additionally, certain rare varieties or errors in 1964 pennies may carry significantly higher values. If you have a particularly unique or well-preserved 1964 penny, it's recommended to consult a professional coin dealer or expert for an accurate appraisal.