- Good (G) condition: $0.10 to $0.25
- Very Good (VG) condition: $0.25 to $0.50
- Fine (F) condition: $0.50 to $1.00
- Very Fine (VF) condition: $1.00 to $2.00
- Extremely Fine (EF) condition: $2.00 to $5.00
- Uncirculated (Unc) condition: $5.00 to $20.00 or higher
It's worth noting that certain 1940 D Lincoln pennies may have special characteristics or errors that increase their value, such as doubled dies or off-center strikes. These can add significant premiums to the coin's value, especially if they are certified by a third-party grading service like the Professional Coin Grading Service (PCGS) or Numismatic Guaranty Corporation (NGC).
To determine the exact value of your 1940 D Lincoln penny, it's recommended to have it professionally appraised by a numismatic expert or submit it to a reputable grading service for authentication and grading.