Three sets of early 20th century buttons

first set, eleven, circular, decorated with a seated lady and her dogs, diameter 1.9cm, sponsor's mark of Thomas White with London import marks for Sterling silver 1902; second set, six, oval, decorated with St. Christopher, length 1.8cm, width 1.6cm, unmarked, tested as continental silver; third set, six, of probable French origin, pierced toggle style, diameter 2cm, unmarked, tested as continental silver, gross weight 101.7g (23)