Rare

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Rare

Describing a coin that is extremely difficult to find. Depending on its quality, a rare coin may be quite valuable, depending on demand from collectors and investors. However, a rare coin may be a highly illiquid asset. See also: Numismatics.
References in periodicals archive ?
Three of the world's rarest pigs - babirusa getting used to their surroundngs at Chester Zoo
On the later occasion while interpreting those ''special reasons'' Supreme Court formulated the 'rarest of rare' doctrine in the case of Bachan Singh's case (1980) and enunciated that death penalty should be awarded only in 'rarest of rare' case only.
"This is one of the rarest operations that has been done, a complex surgery done in stages", added Dr Guleria.
The brainchild of Dubai-based interior design firm D-Town said the library will showcase thousands of the rarest and most exotic textures, patterns and colours from around the world.
Edoylerite, metasideronatrite, and sideronatrite, which also feature in the list of the 2,500 rarest minerals, decompose instantly when exposed to sunlight, while hatrurite - discovered in the Hatrurim Formation in Israel - only forms at a temperature of over 1,250 degrees Celsius (2,282 degrees Fahrenheit).
The Last Unicorn: A Search for One of Earth's Rarest Creatures
Synopsis: The manager of Books on Benefit has died under mysterious circumstances, and one of the rarest books in the world is missing--if it ever existed at all.
One of the rarest Mercedes-Benz models ever produced is going under the hammer.
ATEAM of specialists are braving the heights of the dramatic Welsh coastline to eradicate an invasive plant which threatens to kill off some of the UK's rarest species.
Hunters in Kazakhstan have organised a dog show as part of an attempt to preserve one of the world's rarest breeds - the Tazy.