What is the value of a 1918 US 100 dollar bill?

All 1918 US $100 bills were issued as National Currency Federal Reserve Bank Notes, a form of paper money no longer used. You should have your bill authenticated by an expert in older currency; as of 05/2015 approximate prices are:

• Circulated: $4000 to $7000 depending on the bill's condition
• Uncirculated: $10000

DISCLAIMER: The values quoted are market averages as of the date shown, but may be different for an individual bill due to variations in quality and other factors. Also the wholesale (buying) price of a bill will be less than the selling (retail) price. A reputable currency dealer will be able to give a more accurate valuation based on an in-person inspection.