The movie was a regular popular staple in the programming on HBO cable TV during the 1980s and was frequently played.
On US Amazon prime video the movie name comes up with the alternate title Super Snooper.
Terence Hill played a policeman with Bud Spencer in other cop comedies such as Crime Busters (Crime Busters (1977) and Miami Supercops (1985) the latter of which had the same Florida location as this movie.
The denomination of the banknotes that were being counterfeited was the one dollar bill.