New MT seat for Derbi Variants.
This seat has a rear hinge with a front latch and is for Variant Sport type models with the Flat Reed engine.
Has a new lock/key in the latch but you will have to reuse your old hinge pin and spring with this seat.
This is not for Derbis with a Piston Port or Pyramid reed engine. Compare to your original to see if this is a match.