LIBERTY & CO
Arts & Crafts Brooch 
Gold & pearl
Length: 1.4 cm (0.5 in) Width: 3.3 cm (1.3 in)
Marks: '15 ct' & 'L & Co'
Fitted case
Probably designed by Arthur & Georgie Gaskin
Literature: cf. Liberty Jewellery sketch-book, page 26
Model number: 1828