The coin in question is a 50 pence piece commemorating the 160th birthday of Sir Arthur Conan Doyle, featuring his most famed literary creation – Sherlock Holmes.
It was minted in 2019, with the seller commenting that the coin is a ‘true gem’.
They said: “Add the 2019 Sherlock Holmes 50p coin to your collection today. Crafted to perfection with a fineness of 0.999, this coin is a must-have for any British decimal coinage enthusiast.
“Featuring a very rare design, this coin is a true gem that you won’t want to miss. With its denomination of 50p, this coin is a valuable addition to any collection.
“The detailed design of Sherlock Holmes is an iconic representation of British culture and history. Do not miss out on the opportunity to own this unique and sought-after coin.”
The coin was designed by Stephen Raw and features a silhouette of Sherlock Holmes smoking a pipe, surrounded by a few of Doyle’s most-famous story titles.
The coin is being sold by a Warrington seller on eBay for £4,500, or best offer, with first class Royal Mail postage costing an additional £2.25.
To see the listing, visit ebay.co.uk/itm/204450819149