ww2 binocular battleship gunner’s sight, ottway of London

World War 2 binocular gun sight by the London optical firm, W Ottway and Co, believed to have come from a battleship. Fitted with coloured filters to improve definition under different conditions and with date, maker’s marks, British Military (Crow’s Foot) mark, Pattern and serial numbers engraved to the top. Superb optics. NOT FOR SALE