It has something to do with the "Deutsche Mark (DEM)" which was the Fiat currency West-Germany had before the EURO was introduced in 1999. The D-Mark was what I would call "sound Fiat". Very stable, strong. Many cry after the DEM. In addition, the wall came down in 1989 and all East Germans were able to exchange their worthless communist money at a ratio of 2:1 "only cash is king" so to say.