Ancient Art, Antiquities, Books, Natural History, Stamps & Coins

An oval matrix with Knightia alta specimens. 47.5 grams, 10.2 cm



From Wyoming, USA. From a Cambridgeshire, UK, collection.

In southwest Wyoming (and parts of Colorado and Utah), in the Green River Formation, are found some of the world's most outstanding specimens of fossil fish. The Green River system was composed of three lakes: Lake Uinta, Lake Gosiute and Fossil Lake. These Eocene lakes lay in a series of intermountain basins formed by geological events that uplifted the Rocky Mountains during the early Tertiary time. The climate was much different from the desert-like climate of this area today. Both the fauna (crocodiles, alligators, boa constrictors and some subtropical fish families) and the flora (such as large palm trees) indicate a climate much like that found along the Gulf Coast today. Large amounts of ash found in the sediments indicate that volcanoes were particularly active at this time.

A large freestanding geode display with polished edges, the interior lined with rich, deep purple amethyst crystals. 177 kg, 63 x 72 x 37 cm



From Artigas, Uruguay. Property of a London lady.

Comprising five cut sections with polished faces showing grey and brown banding, four with an exposed crystal-lined cavity. 2.12 kg total, 8.8-12 cm



From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

Comprising four thick slices, each showing agatized patterns and one with a small crystal-lined cavity. 253 grams total, 9-12.1 cm



From Madagascar. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

Shallow, oval bowl with thick edges and showing contrasting banding. 2.3 kg, 24 cm



From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

Comprising five polished hearts, each showing internal coral structure. 106 grams total, 27-36 mm



From a Cambridgeshire, UK, collection.

Comprising six cut and polished geode halves showing characteristic banding, some with crystal-lined interiors. 2.74 kg total, 9-12.5 cm



From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

Translucent orange amber with midge inclusions. 2.89 grams, 28 mm



From a Norfolk, UK, collection.

On a matrix showing the characteristic elongated scales, an old collector's number 'VP206' on the reverse. 507 grams, 19.2 cm



From Brazil. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.

Comprising various sizes of Otodus obliquus teeth. 26 grams total, 17-39 mm



From a Norfolk, UK, collection.

Boxed group of mainly prismatic colourless specimens, some twinned and three specimens with dark dendritic inclusions. 2.93 kg total, 45-88 mm



From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

A circular composite plate of overlapping Cleoniceras sp. ammonites. 583 grams, 22.7 cm



From a Norfolk, UK, collection.