I stand corrected as below is the Official Translated Word as provided to me:

>>In order to regulate the ballistics system, ballistics tests were prescribed for all civilian firearms in Germany by the law of May 19, 1891. The intended test marks (also called proof marks or marks) were prescribed by ordinance of June 22, 1892. The testing stations were established by order of the state governments on April 1, 1893. Initially, there were three proofing stations in Suhl, Zella-Mehlis and Oberndorf am Neckar, which later became proofing offices. In 1905, there were additional proofing offices in Frankfurt an der Oder, Sömmerda, Munich, and in Germersheim.[1] Since 1991, seven active offices have been recorded.<<

Serbus,

Raimey
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