Visor of the Jacobs staff from the wreck of the East Indies ship Hollandia; Navigation; cross staffs' vizor; consisting of 2 parallel strips; flat; straight; with one curved end; joined by a semicircular strip with straight ordered rim; rectangular opening between strips; outer rims or both strips right-angled in the shape of triangular pointed lugs; Annet; United East India Compagnie; Hollandia (ship); anonymous; Netherlands; 1700 - in or before 13-Aug-1743; copper (metal); h 1.1 cm x w 4.6 cm x d 3.6 cm