Niue, a sovereign state in free association with New Zealand, uses two official legal tender currencies. The New Zealand Dollar is the circulation currency for daily transactions, while the government also authorises legal tender coins in the Niue Dollar currency for collector's purposes.
A number of mints issue a large variety of commemorative, bullion and collector coins under the authority of Niue. These coins are dedicated to historical or general popular culture themes not related to Niue itself. Many of them are in standard bullion sizes - typically, one ounce of silver (abbreviated as 1 oz Ag, where "Ag" comes from the Latin word for silver, Argentum). Many of these feature famous movie characters.
This specially shaped coin features The Batman Film and is part of a New Zealand Mint series dedicated to DC Comics characters.
The Mint says about it:
This 1oz pure silver coin commemorates the soon-to-be-released Warner Bros. film, The Batman! This coin is arch window-shaped and has been designed in antiqued silver with a striking cut-out of the theatrical Bat emblem. Batman is engraved in his armour in front of a coloured stained-glass window, along with the words I AM THE SHADOWS.
Ian Rank Broadley’s effigy of Her Majesty Queen Elizabeth II is on the obverse of the coin, confirming it as legal tender. The coin is in a protective acrylic capsule to allow for handling of this precious collectible. It arrives encased in red velvet to show the theatrical Bat emblem cut-out on the coin, inside a compact rectangular The Batman-themed case. A specially designed window allows you to display this treasure easily. On the back is a Certificate of Authenticity with the coin’s unique number. The mintage is just 2,022, to commemorate the year of the film’s release. | 
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