An early 20th century gold, diamond and mother-of-pearl dress-set

An early 20th century gold, diamond and mother-of-pearl dress-set
Comprising: a pair of cufflinks, each oval mother-of-pearl panel with old brilliant-cut collet centre, to figure-of-eight link connections; and a pair of similar circular dress buttons, the mother-of-pearl panels with engraved detail and old brilliant-cut diamond centre (5)