Nike JR Ultraccel R9 F.G Ronaldo 38.5 UK 5.5 new World Cup 1998 117309 w/ box | eBay
Ronaldo and the Nike Mercurial R9's | The Football Fanzine
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 Superfly IV Heritage iD FG Ronaldo R9 1998 World Cup US 11.5 | eBay