The Yamaha YSL-646 is the preprocessor of the current YSL-640. It shares the larger bell and dual slide F valve wrap of the YSL-646 but has a valve with string action like the YSL-456A.
This trombone is silver plated. The plating is in good condition with the only spot of plating wear on t the thumb lever. It shows few signs of dent repair, none of it serious. The slide end guard has been replaced by us and crook dents removed.
It come in a well used Bam case and no mouthpiece.