Not sure what input you'd like, but I can give you some trivia.
Jamaica, being a British colony, used regular British money (pounds, shillings and pence) for the most part. But the colonial authorities found a curious superstition had arisen amongst the general population on Jamaica, that copper or bronze coins were bad luck or otherwise considered evil, and the locals refused to use them. They came to a simple solution to this problem: making substitute farthings, halfpennies and pennies specifically for use on Jamaica, made of something other than copper or bronze. Initially starting out with cupronickel (the same alloy that American "nickels" are made from), then later switching to brass.
Your coins are all brass, for this reason. This is also the reason why no denominations higher than 1 penny were struck for Jamaica: they didn't need to, as regular British silver coins were accepted without problems.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis