This is old production of a motorcycle model that was produced in Italy in the 1990s. Created by a company called Grisoni this is a un-assembled, un painted model of a motocross type of bike. (not sure which kind).
The box measures 3 1/2" x 2" and the parts inside are pictured. The instruction are as pictured on the back of the box.
Limited quantities, this is a close out item of an out of production item.