1930 AD., Germany, Weimar republic, Liberation of Rhineland commemorative, Berlin mint, 3 Reichsmark, KM 70.

Germany, Weimar republic, Liberation of Rhineland commemorative, engraver: Citi Pilartz, Berlin mint, 1930 AD.,
3 Reichsmark (ø 30 mm / 14,96 g), 0.500 silver, 15,00 g. theor. mint weight, mintage 1.734.080 , axes medal alignment ↑↑ (0°), plain edge with immerged lettering: "EINIGKEIT UND RECHT UND FREIHEIT (branch) * (branch) ",
Obv.: DEUTSCHES REICH / A / DREI · REICHSMARK , German national emblem eagle on shield, trilobe and dotted circle around, mint mark "A" above, oak leaves with acron flanking.
Rev.: DER RHEIN DEUTSCHLANDS STROM NICHT DEUTSCHLANDS GRENZE · / 19 - 30 , eagle standing left on bridge, wings closed, date on bridge.
Jaeger 345 ; KM 70 .

Year / Mint Mark / Mintage
1930 A 1.734.080
1930 D 499,920
1930 E 38,400
1930 F 320,960
1930 G 195,200
1930 J 261,440

The Rhineland (German: Rheinland, French: Rhénanie) is the name used for a loosely defined area of Western Germany along the Rhine River, chiefly its middle section.
Under Articles 42, 43 and 44 of the 1919 Treaty of Versailles—imposed on Germany by the Allies after the Great War—Germany was "forbidden to maintain or construct any fortification either on the Left bank of the Rhine or on the Right bank to the west of a line drawn fifty kilometers to the East of the Rhine". If a violation "in any manner whatsoever" of this Article took place, this "shall be regarded as committing a hostile act...and as calculated to disturb the peace of the world". The Locarno Treaties, signed in October 1925 by Germany, France, Italy and Britain, stated that the Rhineland should continue its demilitarized status permanently. Locarno was regarded as important as it was a voluntary German acceptance of the Rhineland's demilitarized status as opposed to the diktat (dictate) of Versailles.
The Versailles Treaty also stipulated that the Allied military forces would withdraw from the Rhineland in 1935, although they actually withdrew in 1930. The German Foreign Minister Gustav Stresemann announced in 1929 that Germany would not ratify the 1928 Young Plan for continuing to pay reparations unless the Allies agreed to leave the Rhineland in 1930. The British delegation at the Hague Conference on German reparations in 1929 (headed by Philip Snowden, Chancellor of the Exchequer, and including Arthur Henderson, Foreign Secretary) proposed that the reparations paid by Germany should be reduced and that the British and French forces should evacuate the Rhineland. Henderson persuaded the skeptical French Premier, Aristide Briand, to accept the proposal that all Allied occupation forces would evacuate the Rhineland by June 1930. The last British soldiers left in late 1929 and the last French soldiers left in June 1930.

more on https://en.wikipedia.org/wiki/Rhineland , https://en.wikipedia.org/wiki/Remilitarization_of_the_Rhineland