There are 3 Valentin Royer trading cards tracked on HobbyCardIndex, spanning Tennis. The most valuable is the Valentin Royer [Pink Refractor] #42 at $9.99 raw.

Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/valentin-royer

Valentin Royer Cards

Name: Valentin Royer Card Price Index — Historical Data
Creator: HobbyCardIndex
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3 cards · Tennis

All Valentin Royer Cards

Valentin Royer Cards

All Valentin Royer Cards

Valentin Royer [Pink Refractor] #42

Valentin Royer #GRS-VRR

Valentin Royer #42

Track Valentin Royer Cards