1921 AD., Germany, Weimar Republic, Haltern (town), Notgeld, collector series issue, 25 Pfennig, Grabowski/Mehl 514.1a-1/3. Reverse

State: Germany, Weimar Republic
Issuer: Haltern (town)
Location of issue: Haltern (town) (Wfl / NW) Stadt
Date of issue: 1.6.1921 AD.,
Value: 25 Pfennig
Size: 92 x 60 mm
Material: paper
Watermark: Achteckfluß
Serial : -
Serial no. : -
Signatures: (2)
Printer: Fr. Wilh. Ruhfus, Dortmund ; designer: Korber
Obv.: 25 - 25 / Was einst gebaut die Römerscharen, / Die hier vertrieb das deutsche Schwert, / Der deutschen Forschung gabs die Erd´ / Zurück nach neunzehnhundert Jahren / …. , part of a Roman legionary camp wall reconstruction, poem of Prof. Dr. Berndt below.
Rev.: Notgeld – der Stadt / 25/Pf. - 25/Pf. / Haltern / KORBER , pope Sixtus II holding city arms, all in a circular wreath at center, Roman urns flanking.
References: Grabowski/Mehl 514.1a-1/3 .

Haltern: modern name of the site of a large Roman fortress, evacuated after the battle in the Teutoburg Forest. Today Haltern is a town and a municipality in the district of Recklinghausen, in North Rhine-Westphalia, Germany. It is situated on the Lippe River.
In 16-13, the Roman prince Drusus reorganized the Rhine frontier and in 12, he invaded the country on the east bank. His main objective was the conquest of the Sugambri in the valley of the Lippe, close to the Roman stronghold at Xanten. The invasion was partly meant as a retaliation for a Sugambrian invasion that had culminated in a Roman defeat (the clades Lolliana), but at the same time, the fertile Lippe valley, rich in corn, was meant to remain Roman. In the autumn of 11, Drusus felt secure enough to build a large military legionary base at Oberaden, as the crow flies 60 kilometers east of the Rhine. Two years later, the young general died and was succeeded by his brother Tiberius (the future emperor). He deported the Sugambri to Xanten -they accepted the new name of Cugerni- and transferred the soldiers of Oberaden to a new and better camp at Haltern.
More on https://de.wikipedia.org/wiki/Haltern_am_See