i have come across a number of Aerostar Models numbers that i am dubious about since i cannot confirm their existance; i even think these numbers are being confused with late Aero Commander designations;

these are the Aerostar Model numbers in question:

Aerostar Model 520

Aerostar Model 560

Aerostar Model 680

Aerostar Model 690

Aerostar Model 720

Aerostar Model 840

Aerostar Model 900

Aerostar Model 980

Aerostar Model 2000

Aerostar Model 4000

can someone pl confirm whether these numbers are infact Aerostar model numbers?