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Prototype ring propeller

2003

Weights from the Castlereagh Collection for Danzig (Poland). Boxed set of 19 rectangular brass weights (6 missing) for the Loth.

Weights and original correspondence from the Castlereagh Collection for Danzig (Poland)

1800-1818

Collection of three platinotype prints of engravings in, 'Selenographia' by Johannes Hevelius, 1647 showing sunspots observed through a telescope.

Collection of three platinotype prints of engravings in

1647

One of of three platinotype prints of engravings in, 'Selenographia' by Johannes Hevelius, 1647 showing sunspots observed through a telescope. From page 500 and dated 28 October to 6 November 1642

Drawing of sunspots, German, 28 October 1642.

1647

One of of three platinotype prints of engravings in, 'Selenographia' by Johannes Hevelius, 1647 showing sunspots observed through a telescope. From page 519 and dated 3 May to 16 May 1644.

Drawing of sunspots, German, 28 October 1642.

1647

One of of three platinotype prints of engravings in, 'Selenographia' by Johannes Hevelius, 1647 showing sunspots observed through a telescope. From page 525 and dated 27 August to 8 October 1644.

Drawing of sunspots, German, 28 October 1642.

1647

Weights and original correspondence from the Castlereagh Collection for Danzig (Poland). Boxed set of 19 rectangular brass weights (6 missing) for the Loth.

Weights and original correspondence from the Castlereagh Collection for Danzig

1800-1818

Platinotype print from Hevelins' Selenographia", 1647, "drawing of Moon" at P.262, remarks:- date 1645, 10" x 12" negative no. SM398

Platinotype print from Hevelins' Selenographia"

1647

Platinotype print from Hevelins "Selenographia", 1647:- "map of Moon at P.226" remarks:- date 1645: 10" x 12", negative no. SM399

Platinotype print from Hevelins "Selenographia"

1647

Original correspondence from the Castlereagh Collection for Danzig (Poland).

Original correspondence from the Castlereagh Collection for Danzig

1800-1818