A diamond and onyx jabot pin designed as an arrow

A diamond and onyx jabot pin designed as an arrow together with four other brooches or pins, the arrow point and flight set with rose cut diamonds and rectangular cut onyxes, all in millegrain edged fields typical of art deco jewellery, in unmarked white on yellow metal, length 4.6cm; also a plain uniform bar brooch set to the centre with a 4.5mm pearl, white on yellow metal marked 'Plat, 15ct', presented in a fitted gold-tooled leather case by the Goldsmiths & Silversmiths Company; together with a seed pearl hoop brooch also stamped '15ct', and two safety pin type stock pins both marked '9ct', cased (5)