But it#8217;s far from the only valuable 50p out there. Here are the 5 most valuable:
To celebrate the famous scientist, the Royal Mint produced special anniversary 50ps, with the first 375 of them released at Woolsthorpe Manor.
Only 600 sporting this image were released before the design was altered to show a clearly visible face. Encouragingly, one of the original coins was recently listed on ebay for £3,000.
He was appointed Warden of the Royal Mint in the spring of 1696, and Master of the Mint three years later.