The requested exchange rates can be obtained from the following info:
http://www.bcb.gov.br/htms/Seminarios/3anosMetasInflacao/KennRogoff.pdf
page 55
Belgium, May 10, 1940–October 5, 1944. Pegged to Reichsmark
http://www.norges-bank.no/stat/historiske_data/en/hms/c7.pdf
Historical exchange rate data 1819–2003
Norwegian speciedaler
1940 Dec
USD 4.400
DEM 176.75 [1.7675? - 1 USD = 2.49 DEM]
BEF 71.50 [0.7150? - 1 USD = 6.15 BEF]
Originally, after the exchange of 1 trillion Mark = 1 Reichsmark in Nov 23 the new
currency was pegged to the dollar at the exchange rate of 4.20 (http://www.uni-erfurt.de/
finanzwissenschaft/konf/Beitr%E4geHistSchools/Stadermann260602.pdf page 13), but
the Hitler government increased its official value and introduced multiple exchange
rates.
http://www.bcb.gov.br/htms/Seminarios/3anosMetasInflacao/KennRogoff.pdf
page 68
Germany, July 13, 1931–April 1945. Multiple exchange rates
http://www.globalfindata.com/frameset.php3?location=/gh/124.html
After the Nazis seized power, Germany increased the official value of the Reichsmark,
but allowed several “free” Mark rates to persist, all of which traded at substantial
discounts to the official value of the Reichsmark. These included the Registermark
(DERR), arising from foreign claims consolidated in 1933 and utilized for traveling,
investments in Germany, etc.; the Reisemark (DERR) for tourists; the Kreditsperrmark
(DERK), which arose from credits not subject to “Standstill” agreements and from sales
of property belonging to foreigners; and the Effektensperrmark (DERE), arising from the
sale of securities in Germany. The Kreditsperrmark and Effektensperrmark were
consolidated into the Handelsperrmark (DERH) in 1939. All of these account currencies
fluctuated in value according to supply and demand.