Iron screen traders
‘Voyage Iron’: An Atlantic Slave Trade Currency, its ... Jan 08, 2018 · Voyage iron exchanged at far above its prime cost, allowing European traders a massive mark-up — that on iron carried to Senegambia on the Portuguese slave ship Nuestra Señora del Vincimiento in 1617 amounted to 1,200 per cent. 26 The margins calculated by Danish custom officials between 1757 and 1764 were not quite so sensational; they were