« Pièce unique » in French can be more or less translated in three different ways : one coin, special play or unique collector item. So which one best matches this scene ? Or maybe the three apply … (click on picture to enlarge)
Leica M9 with 60mm Hexanon at F2.8, 1/500, ISO160

Wow ! Stunning.
Scène unique, bien joué !
Le geste capté, joli réplique