All French franc coins were demonetized in 2005 and are no longer redeemable at the Banque de France, the complete changeover to the euro took place on 1 January 2002.
The 1 French franc coin shows the national symbol of France, the goddess of liberty Marianne, sowing seeds on a field. It is a design by French artist Oscar Roty. with the national motto and the olive branches on the reverse.
OBVERSE: The Sower, designed by Oscar Roty in 1900, a national emblem of the French Republic
Lettering: REPUBLIQUE FRANÇAISE O. Roty
Translation: French Republic
Designer: Louis-Oscar Roty
REVERSE: Underneath the face value, an olive branch is surrounded with the French motto: "LIBERTE - EGALITE - FRATERNITE"
Lettering: LIBERTE·EGALITE·FRATERNITE 1 FRANC 1966
Translation: Liberty · Equality · Fraternity 1 Franc 1966
Designer: Louis-Oscar Roty
EDGE: Reeded 
Designer : "O. Roty" - Louis-Oscar Roty  (1846–1911), was French engraver, one of the most celebrated medalist
Engraver : "owl" - Raymond Joly ( 1911-2006), was French engraver and medalist, won the Prix de Rome in 1942. From 1957 Engraver-General.Mint: "cornucopia" - Paris France, struck at the mint of Pesac 
Mintage in 1966 38 045 138
Country        France 
Period                  Fifth Republic (since 1958)
Type                      Standard circulation coin
Years                    1959-2001
Value                  1 Franc 
Currency            New franc (1960-2001)
Composition           Nickel
Weight                 6 g
Diameter          24 mm
Thickness               1.79 mm
Orientation          Coin alignment ↑↓
Demonetized          17 February 2002
References          F# 226, Gad# 474, KM# 925.1, Schön# 233