The photograph on the left is a copy of a 1904 Swiss military manual. The picture on the right is an example of a 1935 Swiss military manual.  

The photograph on the left is a copy of a 1908 dated Swiss military manual. On the right is an example of a 1925 dated Swiss military manual.  

The photograph on the left is a copy of a 1909 Swiss military manual. The picture on the right is an example of a Swiss Military Gas Mask instruction manual that is dated 1938.

The photograph on the left is a copy of a 1939 Swiss military manual. The picture on the right is an example of a Swiss military manual that is dated 1885.

The photograph on the left is a copy of a 1941 Swiss military hand grenade manual. The photograph on the right is from a 1957 Swiss military manual. Wow, some thing just does not look right here....  :-)