Decorative map of the Netherlands, published by Vander Aa in Leiden, which as apparently struck twice during the printing process.
In the lower right and left corners, it is possible to see a slight mis-alignment in the plate strikes, causing a curious shadowing affect. As this type of printer's error was typically discarded, examples of this sort of printer's error are relatively rare on the market.
Pieter van der Aa (1659-1733) was a Dutch mapmaker and publisher who printed pirated editions of foreign bestsellers and illustrated books, but is best known for his voluminous output of maps and atlases. Van der Aa was born to a German stonecutter from Holstein. Interestingly, all three van der Aa sons came to be involved in the printing business. Hildebrand was a copper engraver and Boudewyn was a printer.