Government prize medal, handcrafted in gold (possibly 18ct, tot wt

Government prize medal, handcrafted in gold (possibly 18ct, tot wt 30.9g, 30mm), no maker, ribbon and bar with pin-back suspension, reverse inscribed 'Won by/No.108/Col-Serg H.H.Moss/Bluff Guards Rifles/Best Shot/In South Island/1909-10'. Extremely fine and very rare.