Produced from circa 1910 through the WWI period. British proofs on the left side of the frame with "III / W.W. GREENER BIRMINGHAM" and the right side has an elephant followed by the serial number. Single large asterisks on top of the barrel and behind the hammer. Grips are numbered to the gun. Complete with an unmarked wooden case holding 12 flares.

Despite Remington producing over 20,000 during WWI, Mark III signal pistols were not used in Europe, as the American Expeditionary Force adopted the French signal system which used larger 25mm guns. The top of the barrel is marked "MARK III" followed by the two line Remington address. Brass frame with blued barrel.

Known by collectors a the Weber Model, this Imperial German Navy signal pistol has a design similar to that of the Model 1899 and was produced around 1915 and used through WWI. Brass barrel and frame with the Stantien & Becker maker marking followed by a number ("St&B" 15") on the butt and "M.G.K." followed by a "7" stamped over "4" on the back strap.