Coin commemorating Isaac Earlysman Sparrow's June 23, 1823 balloon flight with Charles Green. Sparrow was an Ironmonger from Bishopsgate, London who had an interest in balloons. He paid Green 50 shillings sterling to accompany him on a flight. Sparrow issued these coins to commemorate his experience. Sparrow's profile is on the front, with 'Ironmonger Bishopsgate / London' around the edge. A balloon labeled "Sparrow" is on the reverse, with 'Ascended at Oxford / June 23, 1823' around the edge.