Here are approximate values for 1849 half eagles in different grades:
- Good (G): $1,300 - $1,500
- Very Good (VG): $1,800 - $2,200
- Fine (F): $2,800 - $3,200
- Very Fine (VF): $5,000 - $6,000
- Extremely Fine (EF): $8,000 - $10,000
- Uncirculated (UNC): $15,000 - $20,000
However, it's worth noting that the actual value of any coin can vary widely depending on specific market conditions, so it's best to obtain an appraisal from a professional numismatist for a more accurate valuation.