TECO motors made for use in North America are made at the old Westinghouse motor plant in Round Rock, Texas. Yes, the NEMA design specs for motors in North America is +-10% of the nominal nameplate voltage.
But that is not what this motor is, this one was made in Taiwan and given the Chinese writing on the plate, the IEC efficiency references and non-compliant voltages listed, it’s not a NEMA design motor, it’s an IEC designed motor with a new set of data points on the nameplate for using on 60Hz. Most likely with our typical line voltage swings, this motor will saturate, run hot and have a foreshortened lifespan, as well as possible giving you additional torque stresses on starting (unless you have a soft starter or VFD). That foreshortened lifespan might still be 5 years from now, it might be 5 months, there is no way of predicting.
But here’s the thing; they ALREADY OWN IT and it’s already mounted into the machine. In addition, finding, mounting, wiring and protecting a buck-boost transformer to buck the 480 down to 440 for this small of a machine is not likely worth the effort; there is no reasonable payback. So were it me, I would just hook it up, get whatever life they can out of it, and to minimize down time when it does fail, get all of the mounting and shaft details off of it to order a spare now so that it is waiting in the wings ready to swap out. Then take this one to a rewind shop and have it rewound as a 460V motor to keeps as the new spare (although at 25HP, it may not be worth it compared to just buying a new one).
Side note; IEC motors like this will require Class 10 overload protection and they have NO service factor, so pay attention to that in selecting the OL settings.