A collection of 19th century jewellery

A late 19th century yellow metal plaque brooch, possibly depicting Vaishravana, engraved to the reverse '12th May 1878', 34mm x 34mm, weight approx 13.5g, together with a yellow metal locket brooch (at fault), a diamond, seed pearl and enamel brooch, a silver 'Mizpah' oval locket and two silver sovereign cases (6)