I got the 2021 version of Monnaie de Paris Tourist Token - Ile d'Aix

This token already has a page on Numista but for the years 2017-2019. 

Should I modify it by adding "2021" or make a new page for the 2021 version? 

The only noticeable difference I see is the different reverse side. 

Hello and welcome to Numista!

Pictures of your coin and a link to the existing Numista page would be very helpful.  You know what you're referring to.  We can only guess.

A “different reverse side” sounds to me like a different token requiring a different page but then again, how would we know?

Of course. 

Here's the page I'm referring to: Monnaie de Paris Tourist Token - Ile d'Aix - 2017 - France – Numista

As for the coin:

Not even close.  

New page if it doesn't already exist.  Seems to be part of this series:

https://en.numista.com/catalogue/index.php?r=&ct=exonumia&im1=62951fc07484f.jpg&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&ttel=y&ttcs=y&ttes=y&ttrp=y&ttbl=y&ttbb=y&ttmt=y&ttpt=y&ttcf=y&ttcn=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=&ie=&u=&a=&dg=&m=&f=&t=&w=&mt=&g=&se=&d=&c=&wi=&sw=#

I see. I checked the series and it's not there. New page then.

It’s ok: N#329446

Thank you