May's crossword puzzle.
Should be solvable
with but is possible you'll learn one or two new things.
Some more or less useful hints: The japanese coin was once used in Japan. The two towns are both located at rivers in Germany. The three gentlemen hails from Finland.
As usual, Please don't publish your solution until Sunday. We don't want to spoil the fun for the others.
General comments or PMs always welcome. If online I'll confirm.
Enjoy the solving.

![[Linked Image]](https://jonax.se/ijkm/%23012Q.png)