I believe you mean 13 S in the USF: The answer for that would be 13 Stars in the United States Flag.
ISF Men's World Championship was created in 1966.
ISF Women's World Championship was created in 1965.
ISF Men's Fastpitch World Championship was created in 2007.
Test Drive - 2002 Lexus ISF was released on: USA: 5 April 2008
International softball federation
ISF
isf
The GCF is 11.
ISF stands for a few different things such as International Softball federation. It can also be said to stand for Iraq Security Force and also Institute for Substainable Futures.
International Softball Federation (ISF)
it depends on the association (NSA, ASA, ISF...)
the order of it isF# C# G# D# A# E# and B#