These are ceremonial swords of the Masonic Knights Templar.  The symbols of the cross in a crown, the cross patee, and the motton IN HOC SIGNO VINCES ("by this sign you will win") are all symbols of that order.  The ivory grip denotes the sword of a Commander (the presiding officer of a Commandry - the working body of the Knights Templar).  An ebony handle would indicate a Generalission, the no. 2 man.  Usually the name of the owner is etched on the blade, and sometimes the name of his Commandry appears somewhere on the blade or scabbard as well. 
 
[BTW, "in hoc signo vinces" are the words that the Roman Emperor Constantine is said to have seen in the sky, together with a cross, just before a major battle with the last-remaining Tetrarch (one of four "co-emperors").  He had crosses put on the legions' standard staffs, won the battle, and Christianity became the official religion of the Empire.]
		 
		
		
		
		
		
		
		
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