A right-wing local politician in Germany whose back tattoo glorifying a Nazi death camp earned him six months in prison could face more time behind bars as public prosecutors north of Berlin appealed his prison term on Tuesday.

"We want to achieve a higher sentence," said Wilfried Lehmann, the chief state prosecutor for the town of Neuruppin.

The defendant, a 27-year-old city council member in Barnim and member of the far-right National Democratic Party of Germany (NPD), was found guilty last month of "Volksverhetzung", or incitement of the masses, after admitting he displayed the tattoo at a local swimming pool.

The tattoo, which spans the man's lower back, depicts a concentration camp above the words "Jedem das Seine" - a slogan that hung over the main gate at Buchenwald during World War II.

The adage can be translated as "to each what he deserves."

Public prosecutors had demanded 10 months imprisonment without parole during the trial, but the man received a suspended sentence of six months.

"We are now awaiting the written opinion of the court," Lehmann said. "The verbal reasoning did not convince us."

The man's defense team has also appealed the Oranienburg district court's decision. His attorneys questioned the validity of the hate speech clause during the trial and demanded an acquittal.