I have available for sale a Northrop YF-23 First Flight 1 oz .999 Silver Coin and a Signed print by Chief test Pilot Paul Metz. I acquired these at a local estate sale where the owner had passed away. I was told he was a manager for Northrop for over 30 years.

The coin is dated August 27, 1990. I am asking $250 for the coin and signed print. The signature is authentic and the silver coins are becoming more difficult to find. 

These would make a great addition to any-ones Aviation collection.