Love your finds.  I was a bidder on that 1927 Yankees ball but had to bow out early.  My two highlights are game used balls from game 6 and 7 of the 1952 World Series.  My completely wild speculation with no supporting evidence whatsoever is that they were both Mantle home runs—most likely just foul balls or toss ups though.
		 
		
		
		
		
		
		
		
		
	
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