This is Original
YAMAHA
5-Black Group Keys for
MM6, MX49, MX61, KX61, PSR-SX600
MOX6, MOFX6, MODX6
PSR-E323 PSR-E333 PSR-E403 PSR-E413 PSR-E423 PSR-E433
PSR-GX76 PSR-S500 PSR-S550 PSR-S650 PSR-S670 and YPT Series.
Used, but still in a Good Condition.