The 1992 one is the winfield one, all red with the white stripe down the side. also no airels on the roof, there was 4020 as it states on the Certificate of Authenticity. Value is $350 up to $400.
The 1991 is the red white and blue has 2 airels on the roof,it also has a photo on the Certificate of Authenticity and states its the 1991 winner, 4626 were made of this model. Value is $130 up to $150.
So i take it you have sold the 1992 one right?