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LOT 2509
Large Cut and Polished Yellow Agate Crystal Geode Slice Artefact Base
7 3/8 in. (824 grams, 18.7 cm).
Oval section of light brown agate geode showing some quartz crystal formations. [No Reserve]
ProvenanceFrom Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
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AUCTIONS:
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LOT 2509
Large Cut and Polished Yellow Agate Crystal Geode Slice Artefact Base
Estimate £20 - 30€23 - 35 (for guidance only)$27 - 41 (for guidance only)
Opening Bid
£5 (EUR 6; USD 7) +BP*
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Manganese Dendrite Landscape Plaque Group
Estimate: £30 - 40 (+bp*)
Opening Bid: £5
A group of three sawn rectangular shale specimens, each displaying manganese oxide dendrites resembling ferns and branching vegetation. 410 grams total, 10.9 x 7 - 9.7 x 7.6 cm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Natural Gold Specimen Group
Estimate: £30 - 40 (+bp*)
Opening Bid: £5
Comprising a quantity of small specimens in a display box. 8.67 grams total, 58 x 38 mm including box
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Mosasaur 'Marine Dinosaur' Fossil Bone and Tooth Collection
Cretaceous Period, circa 145-65 million years B.P.Estimate: £60 - 80 (+bp*)
Bids: 1 | Current Bid: £5
Comprising various bones and jaw fragments with partial teeth, a coprolite, and others, each with an inked collector's number. 1.85 kg total, 33-99 mm
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.
The Mosasaur is an extinct, large marine reptile dinosaur with an elongated body, long snout and paddle-like limbs. Found worldwide, they competed with other well-known sea predators of the Late Cretaceous, such as plesiosaurs and ichthyosaurs, for food, existing primarily on a diet of ammonoids, cuttlefish and fish.
