The Black Knight Magnum Corona.
Sponsored Links product id: 10924
No links found right now.
Not to be confused with the newer Black Knight Magnum Corona 6. Still no word on what happened to Coronas #2-5. Guessing some product guys at Black Knight drank them.
Anyhow, Ryan Cuskelly was playing with this at the 2013 World Championships:
Photo by Steve Cubbins