1) in Kaiserreich times (1905), for changing the 50-pfennig coin into a 1/2 –mark coin?
2) for the introduction of the 25-pfennig denomination in 1909?
3) why the 25-pfennig was discarded so quickly? And the fate of the 25-pfennig coins?
4) for the change from the small eagle to the large eagle about 1890?
Any help understanding why these things happened (and perhaps their significance) I would very much appreciate.
