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 réédite la Nike Mercurial R9 de 1998 avec les Mercurial Vapor et Superfly
NIKE MERCURIAL R9 Ronaldo 1998 Fg Football Boots - Uk Size 11 £349.00 - PicClick UK
OG Vtg 1998 Nike Mercurial Vapor I 1 R9 Sample Cleats Sz. 7.5 Black Superfly CR7 | eBay
Nike Mercurial R9 Ronaldo Soccer Cleats Shoes Size 2 Y Vintage Retro 1998 style | eBay
Nike Mercurial R9 98 Vintage soccer cleats worn by ronaldo luiz
Nike réédite la Nike Mercurial R9 de 1998 avec les Mercurial Vapor et Superfly
Nike R9 Ronaldo 1998 Mint, never worn after being in... - Depop
Toujours un temps d'avance : généalogie de la vitesse. Nike FR