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

Large open heart with a solid outer shell and the inside with iridescent hopper crystals. 539 grams, 10.6 cm wide



Property of a Bristol, UK, gentleman collector.

Natural formations of pale green prehnite crystals on matrices. 695 grams total, 28-67 mm



Property of a Bristol, UK, gentleman collector.

Comprising three oval matrices with Knightia alta specimens, the largest with two overlapping fish. 148 grams total, 71-85 mm



From Green River formation, Wyoming, USA. From a Lincolnshire, 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 period. 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.

Large curving tooth of a spinosaurus showing brown patina; restored. 109 grams, 12.2 cm



From a Lincolnshire, UK, collection.

The Spinosaurus was both a beachcomber-type scavenger and an active hunter, taking small stranded Plesiosaurs, Pterosaurs, turtles and large fish; adults weighed up to 21 tonnes and grew up to 18 meters long.

Comprising three differently sized bone fragments from different bone structures. 505 grams total, 5.7-11 cm



From a UK collection formed in the 1980s. Property of an Essex, UK, gentleman.

The Spinosaurus was both a beachcomber-type scavenger and an active hunter, taking small stranded Plesiosaurs, Pterosaurs, turtles and large fish; adults weighed up to 21 tonnes and grew up to 18 meters long.

Large Otodus obliquus tooth set on a tongue-shaped matrix. 876 grams, 11.1 cm



Ex Cambridgeshire, UK, collection.

Comprising eight differently sized bone fragments from different bone structures. 130 grams total, 20-55 mm



Acquired on the UK art market. Property of an Essex, UK, gentleman.

The Spinosaurus was both a beachcomber-type scavenger and an active hunter, taking small stranded Plesiosaurs, Pterosaurs, turtles and large fish; adults weighed up to 21 tonnes and grew up to 18 meters long.

A 5 1/2 inch Carcharocles megalodon shark tooth, with serrations and polished light brown tooth enamel. 234 grams, 14 cm



From a UK collection formed in the 1980s. Property of an Essex, UK, gentleman.

Carcharodon megalodon is regarded as one of the largest and most powerful marine predators in vertebrate history and likely had a profound impact on the structuring of marine communities. Fossil remains indicate that this giant shark reached a length of more than 16 metres (52 ft) and also affirm that it had a cosmopolitan distribution. Scientists suggest that in life it looked like a stockier version of the great white shark, Carcharodon carcharias.

Translucent orange amber with fly and other organic inclusions. 0.58 grams, 17 mm



From a UK collection formed in the 1980s. Property of an Essex, UK, gentleman.

Comprising an irregular iron (IAB) meteorite. 1.71 grams, 12 mm



From Chaco Province, Argentina, the fall was discovered in 1576. Previously in a private collection formed in the 2000s. Acquired at auction in the UK. Property of a West Sussex, UK, gentleman.

A crater field of roughly 26 craters was found in the vicinity of this crater, which is estimated to date to 4-5 thousand years BP. The age of the meteorite itself is thought to be c.4.5 billion years, formed as part of the development of this solar system. The largest two fragments, the 30.8 ton Gancedo and 28.8 ton El Chaco, are among the heaviest meteorite masses ever recovered on Earth. In 1576, the governor of a province in Northern Argentina commissioned the military to search for a large mass of iron, which it was believed the local people claimed had fallen from the sky and which they used for their weapon production. The expedition discovered a large mass of metal which was assumed to be an iron mine and brought back a few samples, which were described as being of unusual purity. Following the legends, in 1774 Don Bartolomé Francisco de Maguna rediscovered the iron mass. He himself did not believe that the stone had fallen from the sky and assumed that it had formed by a volcanic eruption. However, he sent the samples to the Royal Society of London. In 1990, it became protected by law.

Comprising: yellow sulphur, coal from Yorkshire Mine, selenite, polished lapis lazuli specimen, and others. 697 grams total, 1.1-16 cm



Acquired on the UK fossil and mineral market. Property of a West Sussex, UK, gentleman.

Pair of small vases carved from nephrite jade, one repaired. 1.25 kg total, 89-90 mm



Acquired on the UK art market since the 1990s. From the property of a late Lincolnshire, UK, gentleman; thence by descent.