Richard, I looked at the links you posted, and they list quite a few F.A.O. coins for Botswana. But looking in all 3 Krause catalogs that I own (1983, 2004, 2009) there is nothing in their descriptions indicating that the coins are F.A.O. issues. Most F.A.O. coins will say " F.A.O.", or "World Food Day", or "Food For All" or something of the kind on the coin. The nearest thing I see to an F.A.O. coin is the 2 Thebe, 1981 & 1985 KM# 14, where the description says "World Food Day". I dunno. Maybe your friend was right, and Krause does not have enough info in their descriptions.
The pictures' fine Miss Kitty! Nice coin too! 