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London Sea Otter pelt sales .svg Graph of London Sea Otter pelt sales Vertical axis is measured in thousands of fells Own work based on graph from Brass Aus dem Reiche der Pelze Bd III Berlin Kalan Enhydra lutris data Fur trading values Skins otter sea otter Otter furskins Aus dem Reiche der Pelze von Emil Brass Fur fashion in