How much was 10 shillings worth?

Could you elaborate on the value of 10 shillings in today's monetary terms, considering historical fluctuations and the fact that shillings were once a part of various currencies? How does one accurately translate this amount into a modern-day currency, taking into account the varying rates of inflation and economic conditions over time? Additionally, is there a specific era or context you're referring to when asking about the worth of 10 shillings?