A New Zealand colonial greenstone and silver paper knife by M. Sandstein, ‘Watchmaker and Jeweller, Christchurch’, the long rectangular blade with pointed ends and of pointed oval cross section, the engraved fancy silver mount with applied coronet bands, the tapered greenstone handles with pointed ends, unmarked, in original card box with green silk ruched lining, maker’s/retailer’s paper label to base. Length 18 cm