Antique cufflinks in hand set Guilloche Enamel cufflinks, Basse Taille cufflinks "Razzaque".  I am not sure about the reference but I can tell you that these are quite old and are in fact a set of Cuff Buttons which would have been hand made for a specific person.  (cuff buttons mean that one side is smaller in diameter than the other, the smaller side being the side that slides through the button hole). The colours are fabulous, the center chain long enough to suit any shirt regardless of fabric and could also be easily shortened if required.   Size -2cm and 1.5 cm, weight of pair-11 grams