I guess not, he does not have dealers anywhere but sells his knives and tools worldwide. Just visit his shop.http://www.schanz-messer.de/en/
Sizes of coins50 Cent (Euro)Diameter: 24,25 mmThickmess 2,38 mm1 EuroDiameter 23,25 mmThickness: 2,33 mmboth coins fit the standard locks, some even take the 2 Euro coinUS Quarter:Diameter 24.26 mm (0.955 in)Thickness 1.75 mm (0.069 in)Diameter is quite similar to 50 Cent, maybe they will fit, depends on lock tolerances...