Erfurt Model 1914 Military Luger, Blue 3 7/8” WWI SA Semi-Automatic Pistol

 
From http://reference.brocksguns.com/brief-history-of-the-royal-erfurt-arsenal/:
“The Royal Arsenal at Erfurt was established in 1862 to meet the increased demand for arms and to locate production toward the center of Prussia where it would be less vulnerable. In accordance with the Treaty of Versailles, the Erfurt arsenal was to be dismantled.
By negotiation, the various arsenals and other government production facilities were privatized and demilitarized to retain the jobs.
These facilities were reorganized as the “Deutsche Werke A.-G.”, and the Erfurt facility was named “Werk Erfurt”. For several years the Deutsche Werke A.-G-, Werk Erfurt produced commercial goods such as hand carts and small furniture articles [also the Ortgies 7.65mm pistol and .22 single shot rifles].”.