Historical Karlte of Helgoland, ''Helgelandia'', showing the states of Helgoland in the period from 800 to 1300 and 1649, two-part part col. Engraving b. Blaeu about 1665, with title cartouches, compass rose, sea monsters and ship staffage, 42.5 x 27.5 cm, framed behind glass and passepartout 63 x 48 cm

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