J.W. Rosier single-barrel top-lever Rook rifle, .360 cal, 26" octagonal barrel engraved 'JAMES W. ROSIER/ 66 ELIZABETH ST MELBOURNE', machine-cut top rib fitted with one standing and two folding rear leaf sights, foliate engraved lock, frame and triggerguard, chequered pistol grip and forend, missing sling eyelets.