British Trade Dollar 1998

I have recently purchased (probably for too high a price) a coin? described as a Trade Dollar and elsewhere as a "Cu-Ni Crown Coin ~ China Zhu Rongji Announces Reforms. It does not appear to be in the Numista catalogue but that may reflect my poor search method. Can anyone offer a better description and suggest in which section it belongs?

"

Can anyone ... suggest in which section it belongs?
Exonumia > United Kingdom
https://en.numista.com/catalogue/index.php?e=royaume-uni&r=Trade+Dollar&ct=exonumia&im1=&im2=&ttat=y&ttcw=y&ttde=y&ttdt=y&ttga=y&ttlo=y&ttte=y&ttpa=y&ttph=y&ttri=y&tttr=y&ttin=y&ttle=y&ttmi=y&ttsc=y&ttwc=y&ttsf=y&ttfe=y&ttfr=y&ttfu=y&ttut=y&ttbu=y&ttco=y&ttlt=y&ttta=y&ttwa=y&ttre=y&ttba=y&ttbr=y&ttca=y&ttcu=y&ttia=y&ttma=y&ttna=y&ttsa=y&ttua=y&ttxa=y&ttam=y&ttcm=y&ttem=y&tthm=y&ttim=y&ttsm=y&ttmm=y&ttpm=y&ttrm=y&ttxm=y&ttym=y&ttad=y&ttct=y&ttme=y&ttar=y&ttts=y&ttcs=y&ttes=y&ttrp=y&ttbl=y&ttbb=y&ttmt=y&ttpt=y&ttcf=y&utility_items=y&ttwe=y&ttfc=y&ttpe=y&ttfp=y&ttpl=y&tpat=y&tpcc=y&tpfa=y&tppa=y&tpre=y&tpso=y&tpco=y&tpfx=y&tppo=y&tppr=y&tppc=y&tprc=y&tptv=y&ttpr=y&ttot=y&tpop=y&cat=y&ru=&ca=6&no=&v=&i=&b=&d=&u=&a=&dg=&m=&f=&t=&w=&mt=&g=&se=&c=&wi=&sw=

Looks like that, and one of the two results above, has a coloured sticker over
the main reverse design, still leaving some of the outside pattern.

Looks like a exonumia piece to me.