He later issued an independent Lundy currency of Half Puffin & 1 Puffin coins resulting in his prosecution by the United Kingdom authorities for issuing illegal coinage under the Coinage Act of 1870 .
1 Puffin coins were nominally equivalent to the British Halfpenny & Penny .
He later issued an independent Lundy currency of Half Puffin & 1 Puffin coins , which were nominally equivalent to the British Halfpenny & Penny , resulting in his prosecution by the United Kingdom authorities for issuing illegal coinage under the Coinage Act of 1870 .