10 guilder coin 1935 from Gdansk

Between 1814 and the Treaty of Versailles on 28 June 1919, Gdansk belonged to Prussia. According to Article 100 et seq. of this treaty, it was detached from the German Empire, declared a free city and placed under the protection of the League of Nations. Thus, Gdansk had become a free state. Inflation in Germany in 1922/1923 affected Gdansk, as the Free City adhered to the Mark currency. To stabilize the currency, the rentenmark was introduced in the German Reich, but Gdansk decided to take a different path: The Senate of Gdansk created the guilder at 100 pfennigs in the law of 20 October 1923. With the annexation to the German Reich and the introduction of the Reichsmark on 1 September, 1939, the guilder was abolished again. 

This short period and the low minted numbers (approx. 380,000 pieces) make the coin a highly desired collector’s item.