YFL 31 silver head flute, earlier version of the 312  but in reality, hardly different, and of superior manufacture quality. The pads have some use, but are in good condition. The flute surface is stunning, and it plays extremely easily for a student or hobbyist. Our last one before Xmas.
 
The 31 is considered to be the best of all the 3 series silver head Yamaha flutes (31. 311. 312) but now difficult to come across in this type of top condition. 
 
This model has extra adjustment screws that make maintenance easier, and servicing cheaper.