F-19 Stealth Fighter
The designation F-19 has been oddly missing from the american fighter aircraft numbering system. Northrop was offered the number for the Tigershark, but chose the F-20 designation instead. Aviation enthusiasts and model companies jumped on speculation that the F-19 was a rumored stealth aircraft in secret service with the U.S. Air Force.
In 1986, model company Testors released their “F-19 Stealth Fighter” kit, which has been claimed to be the biggest selling plastic model kit of all time. Their kit was based on publicly-available stealth research, and a number of features from it, such as canted fins, would appear in later stealth aircraft.
Monogram released their model F-19 in 1987, having bought the rights to use the name “F-19 Stealth” from Testors. Monogram’s F-19 design was based on conceptual art from Loral.
Once the F-117 was acknowledged by the U.S. Air Force in November 1988, both models were proven to be quite inaccurate when compared to reality.