Virtually every European currency was acquired, as well as South American and Far Eastern currencies; a statement from mid-1944 prepared for Winston Churchill cited the cumulative acquisitions to that date as being 600m French francs, 20m Belgian francs, 8m Dutch guilders, 3.5m Norwegian kroner, 3.5m Danish kroner, 6m Reichsmarks, 8m Spanish pesetas, 16m U.S. dollars, and 0.5m Argentine pesos. Excluding the U.S. dollars and Argentine pesos, the balance had cost the British Treasury around £2m. A major problem that both SOE and BSC had to contend with was the sheer weight and volume of small denomination bank notes; a number of surviving signals in SOE files at National Archives in Kew mention "tons" of bank notes.