Grand pair of 14K and Platinum ART DECO era pair of cufflinks, set with sapphires and diamonds, 14.5mm squares, and beautifully etched with highly detailed engine turned designs. 

This pair of cufflinks is heavier than I normally see, at 8.66 grams. Marked on the reverse with 14K & PLAT and I see some very tiny (but uniform) marks on the rings that attach to the bars. Unknown maker, but absolute quality. 

Condition is excellent without damage.