I custom made Ronaldo R9s 1998 Nike Mercurial Vapor's : r/bootroom
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.
Collector boots Ronaldo Nike Mercurial R9 ref 117311 size us8 RARE inter milan | eBay