Rare the Civil War era coin could fetch up to £50,000 at auction . 1643 Declaration Pound made just 6 years before Charles I was beheaded . But inscription on back contains King 's belief that he could not be toppled . Coin was passed down through a family but owner did not realise its value .
Rare English Civil War era coin could fetch up to £50,000 at auction . 1643 Declaration Pound made just 6 years before Charles I was beheaded . But inscription on back contains King 's belief that he could not be toppled . Coin was passed down through a family but owner did not realise its value .