This is a Royal Selangor fountain pen designed by Nathan Yong. It is fixed with a Sheaffer nib. This is a limited edition of 200 pieces worldwide. It is not number. It comes in a beautiful black-finish wooded case.
Sheaffer x Royal Selangor Fountain Pen Limited Edition
This Vapour pewter fountain with Sheaffer nib is designed by designer Nathan Yong. It comes with a convertor and a nice wooden case.
The last pen that Royal Selangor launched a fountain pen was in 1997.