Hello Mark, 
The dussäge at the museum was indeed also described as a "SInclair Sword" and a short synopsys was given about his ficticious incursion through Norway into Sweden. 
Thanks for the pics, the second/bottom one is closest to what I saw, but still not the same. The one at the ROM was much more curved and the yelman was very well defined. The blade was somewhat narrower as well, and -not too sure- but it seemed a bit thin as well. 
I will go again in June and take pictures to post. 
Emanuel
		 
		
		
		
		
		
		
		
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