The General Atomics MQ-20 Avenger (formerly Predator C) is a developmental unmanned combat air vehicle built by General Atomics Aeronautical Systems for the U.S. military.  Unlike the previous MQ-1 Predator and MQ-9 Reaper (Predator B) drones, the Avenger is powered by a turbofan engine, and its design includes stealth features such as internal weapons storage and an S-shaped exhaust for reduced infrared and radar signatures.  It was intended to replace the MQ-9, but was ever put into production.

After testing, the Air Force decided that the Avenger version they evaluated offered only modest improvements over the MQ-9 in terms of speed, payload, and reduced signature, and didn't meet survivability and reliability requirements to survive in contested environments needed to warrant buying a new aircraft of the type.

https://en.wikipedia.org/wiki/General_Atomics_MQ-20_Avenger 
 
Here it is seen in a test flight likely over Southern Calirfornia.
 
Comes with an embossed Certificate of Authenticity.