Reduced Venetian engraved copy of Isaac Brouckner's famous sea atlas of 1749, the first Prussian "Sea Atlas", published by Remondini in 1761.
Our example of the original Isaac Brouckner 12-sheet wall map can be seen here: www.raremaps.com/gallery/detail/63715
This is probably based on a revised version of the Brouckner or was revised by Remondini or Daniel "Berneulli" (Bernoulli?), as it includes a substantially different treatment of North America, especially the Pacific Northwest. The treatment of this region and that of the Canadian Arctic is noteworthy, with the continent shown stretching all the way to the North Pole on which there are said to be "Mountains of Ice on the Land".
The map includes a number of speculative waterways that were popular, particularly in French cartography, in the third quarter of the 18th century.