1921 AD., Germany, Weimar Republic, Grünberg in Schlesien (town), Notgeld, collector series issue, 50 Pfennig, Grabowski/Mehl 489.1a-1/7. Obverse

State: Germany, Weimar Republic
Issuer: Grünberg in Schlesien (town)
Location of issue: Grünberg in Schlesien (town) (Sln / Poland: Zielona Góra) Stadt
Date of issue: 1921 AD. (?), valid til 31.12.1921
Value: 50 Pfennig
Size: 92 x 63 mm
Material: handmade paper
Watermark: -
Serial : -
Serial no. : -
Signatures: (2)
Printer: J. Fiedler Nachf. Grünberg, Schesien
Obv.: NOTGELD DER OBST- UND WEINSTADT / Grünberg/Schl. / 50pf – 50pf / Gültig bis …. , coat of arms, fruits, vine grapes and various meals flanking.
Rev.: Am Hungerturm / mit Blick auf das Rathaus / 50pf / fünfzig - Pfennig , town hall night view from Hungerturm, stars above, woman with backpack for wine grapes at left.
References: Grabowski/Mehl 489.1a-1/7 .
more on https://en.wikipedia.org/wiki/Zielona_Góra

Todays Zielona Góra (German: Grünberg in Schlesien) is a city in Lubusz Voivodeship, in western Poland, with 138,512 inhabitants (2015).
The first settlement in the area of Zielona Góra was built in the valley near the Złota Łącza stream during the reign of Polish ruler Mieszko I. The oldest settlement was agricultural and later developed into a trading point along routes from Poznań to Żagań and further to Łużyce. The written records of the Slavic settlement date to 1222 and an increase of its population by Henryk Brodaty. Other documents date the settlement to 1302.
The region received influx of German burghers in the second half of the 13th century during the medieval Ostsiedlung. The settlement became a city with Crossener Recht, a variation of Magdeburg rights, in 1323. The earliest mention of the town's coat of arms is from 1421, although it is believed to have been arranged since the beginning of the 14th century. A document in the town archive of Thorn (Toruń) dating from before 1400 used a sigil with the name GRVNINBERG, an early form of the German name Grünberg.
more on https://en.wikipedia.org/wiki/Zielona_Góra