CARTIER 18K & ONYX CUFFLINKS: 2 tone 18k gold bar cufflinks with onyx inserts, signed ''Cartier 750'', #'d L98121. Sold with original presentation box and leather storage pouch for the onyx bars, also with outer boxes marked Cartier Paris London New York Made in France Ref B2100003. Approx. 7/8'' square, gold portion weighs 2.9 grams each.