It is 7s 6d not 4s 6d.
7s 6d was 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, so PENCE would be correct in 1964 when it was created.
rolling_stone pointed out that Kenya used pennies before they started printing and minting money.
http://www.freerepublic.com/focus/news/2306755/posts?page=1029#1029
http://en.wikipedia.org/wiki/Coins_of_the_East_African_shilling
(If we can trust the sources here.)
Fresh Wind pointed out a couple of other options for why the 7s 6d might have been used on a legit Kenyan doc:
http://www.freerepublic.com/focus/news/2307402/posts?page=336#336
“Its quite possible that British (shillings/pence) currency was used interchangably with the local (shillings/cents) currency.
Its also possible that there was some confusion in the printing of these forms (they may well have been printed in Mother England).”
Can you be more specific as to the source? What page at Wiki? TY