What is the value of an 1854 seated liberty quarter?

You didn't say what mintmark but a 1854 seated Liberty quarter is worth this: Good-4: $20.00 Very Good-8: $25.00 Fine-12: $35.00 Very fine-20: $45.00 Extra Fine-40: $85.00 Almost Uncirculated-50: $225.00 Mint State-60: $500.00 There is an error where the O mint mark is larger than usual.