Quote:
	
	
		| 
			
				The brass ferrule is a little bit more than 1 mm. I don't know how strong it is by older ones.
			
		 | 
	
	
 Over 1mm sounds reasonable. Craftmanship of the ferrule (and brass pieces on scabbard) looks post-WW2 to me but seems to be ok to keep this way.
	Quote:
	
	
		| 
			
				The tip of the blade was compressed but this I have grinded with a stone.
			
		 | 
	
	
 Compressed? Many smaller blade damages can be carefully straigthened out - I'd be reluctant to grind away even minor defects (to avoid loss of metal, changing the shape, etc.).
Regards,
Kai