Might be wrong Grakmar but the Joey
afaik was a silver thruppence
Never heard of the 12 sided copper thruppeny bit called a joey.
Just in case anyone didn't get the monkey reference.
iirc a French ship was lost off the North East coast and this ship's monkey made it ashore.
As the residents of Hartlepool had seen neither a monkey nor a Frenchman before they mistook his chatter for foreign lingo a la francais.
Poor monkey was tried as a French spy.
Needless to say his defense was not impressive, so he was summarily executed by hanging as Notprop said!