Hello Séverin,
	Quote:
	
	
		| The tang is not rusty and there is resin residue inside the handle. | 
	
 Well, the flash does prove a bit of red rust to be present... 
 
The tang looks robust and it is possible that stable and active rust are relatively thin.
How wide is the gap? 3-4 mm? There may be a single "crown" missing here (usually made of suasa)!
	Quote:
	
	
		| The fitting between scabbard and blade is good but not perfect. | 
	
 Sounds good - given some erosion of the blade and shrinking of the wood a perfect fit is not to be expected.
Congrats, looks like a nice, genuine ensemble!
Regards,
Kai