Australia: Caldwell Machine Gun Co. Ltd., a pair of certificates for 25 shares and 50 shares of 10 shillings, 191[4] and 191[5], #826 and #634, blue on blue paper. The Caldwell gun was similar to the Maxim but had 2 barrels and used a drum of ammunition rather than a belt which tended to jam. Sold in London but due to the war never really reached serious manufacture. Although some were used by ANZAC forces it as never mass produced and it dissapeared into history following the war. VF (2).