1899 A 5 rm

I’m wondering, what is the writing on the side of this screen? I can find no information about any writing.

 Well, I tried to look to see what that was about 

https://en.numista.com/catalogue/index.php?r=1899+A+5+rm&st=147-150-149&cat=y&im1=&im2=&ru=&ie=&ca=3&no=&v=&a=&dg=&i=&b=&m=&f=&t=&t2=&w=&mt=&u=&g=&c=&wi=&sw= 

 so need a link or pictures … 

Maybe this N#307687 but 1899 makes no sense and neither does the rest of the question.