Nike celebrate 15 years of Mercurial and recreate the R9 boot
15 years with the Mercurial R9 - The original faces off with the heir
Nike JR Ultraccel R9 F.G Ronaldo 38.5 UK 5.5 new World Cup 1998 117309 w/ box | eBay
Mercurial Mk1 - The Original R9 - SoccerBible
I believe these are the mercurial r9 from 1998. I remember having a pair with the same colorway but without cleats. For indoor soccer I believe but can't find any info online.
Nike celebrate 15 years of Mercurial and recreate the R9 boot