What is the value of a 1950 Jefferson nickel?

If there is no letter to the right of the image of Monticello on the coin's back, your nickel is worth about 15¢

If there is a small "D", it's worth $5 to $10 depending on condition.

However there are counterfeits of the 1950-D coin so you should have it examined by a dealer or appraiser.