1. Lincoln Wheat Penny:
- Well-worn to very fine condition: $0.05 - $0.10
- Extra fine condition: $0.15 - $0.25
- Uncirculated: $0.25 - $0.50
2. 1940-D Lincoln Wheat Penny:
- Well-worn to very fine condition: $0.25 - $0.50
- Extra fine condition: $0.50 - $1.00
- Uncirculated: $1.00 - $2.00
3. 1940-S Lincoln Wheat Penny:
- Well-worn to very fine condition: $0.50 - $1.00
- Extra fine condition: $1.00 - $2.00
- Uncirculated: $2.00 - $4.00
The 1940-D and 1940-S coins carry significant mint marks and may command higher values due to their relative scarcity compared to the regular 1940 Lincoln Wheat Penny. Additionally, any errors or unusual characteristics on the coin, such as double-die impressions or off-center strikings, can further increase its value.
Note: These values are approximate and can fluctuate based on market conditions and individual coin assessments. For a more accurate appraisal, you can consult a professional numismatist or refer to reliable coin price guides.