Royal Thailand Tienshan dinner service (Norcot RG30)

Does anyone have odd items of Royal Thailand Tienshan china they no longer require? It's the delicate black and silver pattern I am after, as shown in the photos. I am looking to replace some items I have broken and ideally to acquire a few spares in case of future breakages. Any plates, bowls, cups or saucers with this pattern would be much appreciated.