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					Originally Posted by T. Koch
					
				 
				It looks like the crevices on your knuckle- and thumb-guard are also filled with dirt or crud of some sort? Mine has that too! Is yours also hard as cement - I mean hard as in really bloody hard and impossible to remove? 
 
Any idea as to what this gunk is and why it was put in the guard? 
 
 
Cheers, - Thor 
			
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 I think that these brass guards where casted in earth, so the cavities are probably filled with burned earth, hence the hardness like cement.
I would not remove it if it was still there.
Best regards,
Willem