1990 & 1991 CR250R tanks were red, this one is white. It should be OEM for the 1991 & 1992 CR125R. 

This tank should fit both models and the years above, the only difference was the tank color. 

Has scratches and is dusty. Petcock may need to be rebuilt, the lever does turn freely. The screws that hold the petcock on are loose and may need a new oring to seal it to the tank. There are no cracks, & no repairs. 

If you think this may work for a different year, please let us know.