Beautiful Victorian Silver Piquet & Mother of Pearl Fruit Knife

The handle of this fruit knife is so beautifully decorated with tiny circles being inlaid into the Mother of Pearl through a process known as Piquet. The tiny circles are around a cartouche which look likes it carries the name of 'Nina' and at the centre and at the points of two beautifully engraved star bursts on either side of the cartouche. The blade is sterling silver and carries clear hallmarks showing it was assayed in Sheffield in 1863-1864 by the makers Martin Hall & Co, as well as the Queens Head Duty Mark. The blade does fold out fully but I foolishly omitted to photograph it.