0 Euro - Scaphandre des frères Carmagnolle 1882

The Carmagnolle brothers' 1882 diving suit — the subject of this souvenir note — was the first articulated armored diving apparatus to use anthropomorphic joints, with 22 ball-and-socket mechanisms allowing genuine limb movement at depth. It never worked well in practice; pressure differentials made the joints nearly impossible to move below a few meters, and the suit saw no real commercial or military adoption. The Smithsonian Institution holds the surviving example.

Oberthur Fiduciaire, a serious security printer responsible for numerous circulating issues, produced the entire EuroSouvenir series to banknote specification — hologram strip included — despite these notes having no legal tender status anywhere.