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Saturday, 16 January 2021

1634) "Brontosaurus", Niue Island: Coin Series Theme: "Dinosaurs": A $2 (Two Dollars) Silver coin minted by the New Zealand Mint, on behalf of Niue Island: Year of Coin issue: 2021:

1634) "Brontosaurus", Niue Island: Coin Series Theme: "Dinosaurs": A $2 (Two Dollars) Silver coin minted by the New Zealand Mint, on behalf of Niue Island: Year of Coin issue: 2021:

Dinosaurs – Brontosaurus 1oz Silver Coin issued by Niue Island:

The  Brontosaurus is one of the most recognised of all dinosaurs. This gentle giant was a terrestrial herbivore. Its distinctive long neck may have evolved to reach marshy vegetation that was some distance away or to get to leaves that were higher up in trees.

Brontosaurus (means "thunder lizard" from Greek βροντή, brontē "thunder" and σαῦρος, sauros stands for "lizard") is a genus of gigantic quadruped sauropod dinosaurs. 

Although the type species, B. excelsus, had long been considered a species of the closely related Apatosaurus, researchers proposed in 2015 that Brontosaurus is a genus separate from Apatosaurus and that it contains three species - B. excelsus, B. yahnahpin, and B. parvus.

Brontosaurus had a long, thin neck and a small head adapted for a herbivorous lifestyle, a bulky, heavy torso, and a long, whip-like tail. 

The various species lived during the Late Jurassic epoch, in the Morrison Formation of what is now North America, and were extinct by the end of the Jurassic.  

Adult individuals of Brontosaurus are estimated to have weighed up to 15 tonnes (17 short tons) and measured up to 22 metres (72 feet) long. 

As the archetypal sauropod, Brontosaurus is one of the best-known dinosaurs and has been featured in film, advertising, and postage stamps, as well as many other types of media. 

Historically, sauropods like Brontosaurus were believed to be too massive to support their own weight on dry land, so theoretically they must have lived partly submerged in water, perhaps in swamps. Recent findings do not support this, and sauropods are thought to have been fully terrestrial animals. 

Diplodocids like Brontosaurus are often portrayed with their necks held high up in the air, allowing them to browse on tall trees. Though some studies have suggested that diplodocid necks were less flexible than previously believed, other studies have found that all tetrapods appear to hold their necks at the maximum possible vertical extension when in a normal, alert posture, and argue that the same would hold true for sauropods barring any unknown, unique characteristics that set the soft tissue anatomy of their necks apart from that of other animals. 

Trackways of sauropods like Brontosaurus show that the average range for them was around 20–40 km (10–25 mi) per day, and they could potentially reach a top speed of 20–30 km/h (12–19 mph). The slow locomotion of sauropods may be due to the minimal muscling or recoil after strides. 

Various uses have been proposed for the single claw on the forelimb of sauropods. They were suggested to have been for defence, but the shape and size of them makes this unlikely. Other predictions were that it could be for feeding, but the most probable is that the claw was for grasping objects like tree trunks when rearing. 

The Commemorative Coin:

This 1.0 oz pure silver coin has been antiqued to reflect the historic theme. 

The Reverse of the $2 (Two Dollars) Silver Coin shows the Brontosaurus in full colour against a detailed prehistoric landscape which has been finely engraved. The coin is legal tender in Niue.

The peripheral inscriptions are - "BRONTOSAURUS" (on the upper periphery) and "1 OZ 999 Fine Silver" (on the lower periphery).

The Obverse of the $2 (Two Dollars) Silver Coin features the  effigy of Queen Elizabeth II facing right, designed by Ian Rank-Broadley, whose initials "IRB" ape placed below the Queen's neck.

The peripheral inscriptions are - "ELIZABETH II. NIUE. TWO DOLLARS. 2021".

The Presentation Case/Box with the Silver Coin and the Numbered Certificate of Authenticity (NCOA).

The Presentation Box - Outer Cover.

The Outer Cover placed against the open Presentation Box.

The Numbered Certificate of Authenticity (NCOA).

The coin arrives inside a themed outer box, which also displays an image of this gentle giant amongst a background of rock.

The specifications of this Coin are:

Coin Series Theme: Dinosaurs; This Coin Theme: Brontosaurus; Denomination: $2 (Two Dollars); Country of issue: Niue Island; Metal Composition: .9999 Fineness Silver (Ag); Weight: 1 Troy Ounce; Diameter/Size: 40.0 mm; Mintage: 2,000 pieces; Presentation Box: Yes; Numbered Certificate of Authenticity (NCOA): Yes;  Coin Quality: Antique Finish;  Year of Issue: 2021; Designer: (Obverse) - Ian Rank-Broadley.







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1) Caves of Slovak Karst in Slovakia: A World Natural Heritage UNESCO Site: A Gold Coin of 100 Euros issued under the "World Natural Heritage" Series by the National Bank odf Slovakia, minted by the Kremnica Mint on 15.11.2017

2) Slovak National Theatre, Slovakia: Centenary Celebrations (1920-2020): A 10 Euro Silver Coin issued by the National Bank of Slovenia, minted by the Kremnica Mint: Year of issue: 2020

3) Stefan Banic (1870-1941), Slovakia: 150th Birth Anniversary of the slovak inventor of the Parachute: A 10 Euro Silver Coin in Proof (P) and Brilliant Uncirculated (BU) variants issued by the Kremnica Mint on behalf of Slovakia: Year of Coin issue: 2020

4) Josef Maximilian Petzval (06.01.1807-19.09.1891), Slovakia: A Brilliant Uncirculated Medal issued on the inventor, minted by the Mint of Slovakia, Kremnica: Year of Medal issue: 2020




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