Nike Mercurial Superfly IV Heritage iD FG Ronaldo R9 1998 World Cup US 11.5 | eBay
Nike celebrate 15 years of Mercurial and recreate the R9 boot
The Ronaldo 1998 Mercurial Boots Are Getting A Reboot - SPORTbible
Nike 1998 Mercurial Vapor 12 Heritage FG Ronaldo R9 US 8.5 Soccer Cleats w/Box | eBay
Nike Mercurial FG 1998 R9
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 R9 1998 – Boots Vault
15 years with the Mercurial R9 - The original faces off with the heir
Remembering R9's World Cup Boots: 1998 – 2006 - SoccerBible
Remembering R9's World Cup Boots: 1998 – 2006 - SoccerBible
Mercurial Mk1 - The Original R9 - SoccerBible
UPDATE: Dembélé Trains in Nike Mercurial Vapor XII 1998 Boots - Footy Headlines