Nike Mercurial Superfly IV Heritage iD FG Ronaldo R9 1998 World Cup US 11.5 | eBay
Nike Mercurial Vapor Chrome World Cup 2002 Soccer R9 Football Indoor Ronaldo 02 for Sale in Chicago, IL - OfferUp
Nike Mercurial Superfly 9 Club Indoor/Court Soccer Shoes. Nike.com
NIKE Match Mercurial 365 III T90 R9 VAPOR INDOOR TRAINERS 10 9 44 | eBay
Calzado de fútbol para pasto sintético (turf) Nike Mercurial Vapor 15 Academy. Nike MX
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 Mercurial VAPOR III R9 Blue INDOOR TRAINERS BOOTS Size 8,5 42 | eBay