15 years with the Mercurial R9 - The original faces off with the heir
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.
Mercurial Mk1 - The Original R9 - SoccerBible
Rare Nike Mercurial R9 Ronaldo World Cup 1998 2.1 FG | eBay