Yes, the sword is quite bendable and bending is in the lower half. There is rust but I think is mostly on the surface, additional photos on a better light show that. 
 
Before posting I already lightly cleaned the sword with a toothbrush, synthetic sewing machine oil and Pelikan rubber eraser (the blue part of the eraser). 
 
The sword is for sure a trade steel, as there is no such steel in Sumatra.  
 
Think I saw years ago in Jakarta History Museum similar sword with description "18-century Indian sword".
		 
		
		
		
			
		
		
		
		
		
		
		
	 |