“半便士”的英语？

我们东翻西找,好不容易找到几枚一便士和半便士的硬币.We managed to run the coveted pennies and halfpennies to earth.吝惜半便士柏油而毁坏一只船(因小失大).It is useless spoiling the ship a ha'p'orth of tar.给我两枚半便士的硬币.Give me a penny for 2 halfs....