Yeah it's in EF I would think. I found it in bag of wheat cents about 50 years ago. Only remember that still had it above last week. i am still looking for the other type listed in world book.they note two.
Todays coin is the 1904 50 centesimos.This coin is the size of a US silver dollar Mintage 1.8 million. A large number of these were melted to produce the 1931 1 Balboa.
Here are a few I've already got photographed (besides the pile I have yet to have time for...) 1979 20 Balboas 1934 1 Balboa 1966 1 Balboa 1970 5 Balboas 1962 1/4 Balboa 1953 1 Balboa 1933 1/2 Balboa 1931 1 Balboa