A Shadow of Doubt
Currency in Berlin
Deutsche Marks (You have 2000)
These are the legal tender in West Berlin. Economically, their value is (for game purposes) equal to modern day american dollars.
Ostmarks (You have 0)
Ostmarks are the legal tender in East Berlin. worth considerably less than the Deutsche Mark, travelers are still required to exchange the currency at a 1 to 1 ratio.
Legally, these marks are of equal value. Because of the economic differences between the two halves of the city, however, the black market currency exchange is currently 7 to 1. To clarify, 7 Ostmarks are worth 1 Deutsche Mark.