Karlsruhe shells 1905

3 used gun shells - I know nothing about these shells the markings on them are a crown with m underneath the numbers c/97 98 the year 1905 2 have the numeral IX and one has the numeral XII they all have Karlsruhe stamped on them and the numbers at the bottom of them are 159, 171, 162 , please feel free to contact me if you have any questions and i will try my best to answer them.