This 7210 row-tractor is one of the Magnum 7200 series that were made from 1994-1996 in Racine, Wisconsin, USA. It appears that this is the model made in 1996 as it has the smaller front wheels.
Used tractors of this type are still offered for sale at auctions. But the diecast models are hard to find. Especially in the 1:64 scale size. I have only this one to offer – at $8.00. You may want to snap it up while you can.