It is found in several reports about the Versailles documentation and implementation that after November 1918, being only an “Armistice”, the German Munitions Industry continued production; and by the time the Treaty was signed in 1919, several “Inspection” committees had estimated a figure of
"Munitions" which had to be turned over or destroyed by Germany to the Allies ( Artillery, Ammunition, Small arms, Railway equipment, Merchant ships etc).
So the German Industry, in order to meet these “quotas” had to continue manufacturing during 1919 and into 1920, sufficient pieces to meet these sometimes Over-estimated Figures. A Lot of this “excess” was then either handed over to the Allies, or destroyed under Allied Inspection supervision.
Unknown to the Inspection teams, a lot of equipment was “squirrelled away” in neutral countries (The Netherlands, Soviet Union, Sweden) as were the design offices for U-Boats and other projects. Read “The Arms of Krupp” in reference this period of German Industrial History.
This extended manufacturing period did, in a small way, reduce the impact of unemployment on the German Population, with the Demobilization of Millions of Troops, but the entire Punitive provisions of the Versailles Treaty went on to Germany’s Massive and ruinous inflation of 1922-23, and the subsequent rise of the DNSAP ( Deutsche Nazionalischte-Socialischte ArbeitsPartei) and Adolf Hitler.
One odd occurence was, due to Pre-war cartel arrangements between Vickers and Krupp, after WWI, Krupp sued Vickers for Patent Licence infringement, ( a Fuze used by Vickers in a 3 inch (18 pdr) British shell was of Krupp design) so that for every fused shell which killed German Soldiers, was owed Krupp a royalty of 1 shilling or so. The case went on for several years, and Krupp finally won (in a British Court)…and Vickers paid up. Talk about the intrigues of the World Arms market.