How much is a world war 2 Nazi dagger issued from Hitler worth?

An original made by Alexander Coppel of Solingen (abbreviated Alcoso) is a rare dagger and can command prices above $10,000 USD. Unfortunately, there are many more reproductions and replicas of these daggers than there are real ones, and most of them are valued at less than $100 USD. A dealer of original diplomat daggers is Wittman Militaria.