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Those are rather splendid. They're enamelled fashion buttons, of a kind categorised as 'Chinoiserie'. Probably all from the same era, and one of them can be narrowed down in date to between 1865-1904.
The backmark 'T W & W' is for Trelon, Weldon & Weil of Paris, France. They operated under that name from 1845-1865 when the 'H M' letters were added to reflect a name change to 'Trelon-Weldon-Weil Hartog et Marchand' The company name then changed to ‘Coinderoux’ in 1904.