1904 Barber Quarter:
- Good (G) condition: $25 - $50
- Very Good (VG) condition: $50 - $75
- Fine (F) condition: $75 - $125
- Very Fine (VF) condition: $125 - $200
- Extremely Fine (XF) condition: $200 - $300
- About Uncirculated (AU) condition: $300 - $500
- Uncirculated (UNC) condition: $500 - $1,500+
1904-O Barber Quarter (New Orleans Mint):
- Good (G) condition: $30 - $60
- Very Good (VG) condition: $60 - $90
- Fine (F) condition: $90 - $150
- Very Fine (VF) condition: $150 - $250
- Extremely Fine (XF) condition: $250 - $400
- About Uncirculated (AU) condition: $400 - $700
- Uncirculated (UNC) condition: $700 - $2,500+
Please note that these values are estimates and actual prices realized may vary depending on market conditions and the specific characteristics of the coin. To determine the exact value of your 1904 quarter, it would be best to consult with a professional numismatist or use a recognized coin pricing guide.