Rare and highly detailed chart of the area around Gijon, on the Coast of Asturias.
Tofiño de San Miguel's chart appeared in the monumental Atlas Maritimo de España. This two volume atlas was the most detailed survey of the Spanish Coastline ever conducted, which is highly prized among collectors (See e.g. Frank Streeter Sale (Christies Sale No. 1820 (New York), April 16, 2007), item #501.