If the "7s. 6d." refers to money, then in Australia it means 7½ schillings. In Kenya it means 7.06 schillings, an unlikely charge to levy for a copy of birth records.
What was the conversation rate in 1964? Today, 7 schillings is about 9 cents (USD).
7s 6d is a very normal charge in Old Sterling:
7 shillings (no letter c) and 6 pence (d = Latin denarius)
7s 6d = seven and a half shillings
7s 6d = three eighths of a pound sterling
I know that we were dealing with East African Shillings, but the mindset came from the British who used Pounds, Shillings, and Pence.
Wikipedia says the EAS and pence were replaced in 1966 by the Kenyan shilling and cent.