Mervin,
Most interesting. The notes from 1908 were still circulating in 1920. Then Germany got stung with reparations and the value of the mark went into freefall (a bit like Zimbabwe today). There were cases of people ordering a meal at say 5 million marks, by the time they had eaten it it was 7 million marks By 1924 it got to the point where 5,000,000,000,000 marks was the equivalent of 1 US dollar (5 billion (English billions not devalued American ones which are really milliards). Notes were produced up to the value of 50 billion marks by the end. The hyperinflation ruined many people and was one of the many reasons that Hitler finally triumphed. The notes themselves are extremely common and almost worth less than the paper they are printed on but they are a fascinating snapshot of post war Germany.
All the best,
Paul