These cufflinks have a rigid bar and were made by the A&Z Chain Company, founded in 1905.  These Edwardian cufflinks are gold topped and double sided featuring a gold diamond shape in the center of a pinstripe pattern and are edged in a decorative engraved gold pattern.  The tops test positive for 12 karat gold.  The face of each link measures 1/2" wide by 5/8" long.