See PAJ2421, which is a complete copy, though less bright, for notes and reproducible images. This one is exhibitable, though with slight repair and incomplete in that the printer's line, lower left outside the frame, has been trimmed off. ZBA0726 is a worn and damaged copy presented to the 5th Astronomer Royal, Nevil Maskelyne, 'for the use of the Royal Observatory' in 1806 and PAI7662 a mid-20th-century reproduction. Originally published in 1637 and the Museum copies are of the post-1642 state iv issue. [PvdM 9/15]