ah it is not yours?
Of course not an official clasp for the DSWA-medal (private ordered rememberence something....) but what I can see from the pics nice original old piece ------- AND ------- the first one like this I have seen for all times
+ Kalahari 1907 for the british troops
+ Narudas (instead of Nurudas)
additionaly there are a lot of inofficial private purchased clasps known with different places on it , mostly from ww1 battles , but worn on the DSWA-medal too sometimes (of course incorrectly and not official)