These are fairly modern coins and are worth only small amounts except in one notable case. For the non-notable cases:
worn: less than $1 US dollar
average circulated: $1 US dollar catalog value
well preserved: $2
fully uncirculated: $8
To convert from these catalog values to actual buy and sell values, refer to our Important Terminology page (link at upper left).
The notable exception is the coin dated 1947. In the years of World War II, France issued this same pattern coin in bronze. If you happen to have one that looks like this but it is in bronze, it is worth a bundle. A bronze 47 catalogs for $250 in well preserved condition. An aluminum 47B is not too shabby, either, cataloging for $10 in well preserved condition (coin must have a B mint mark).
For a look at the bronze version of this coin, click to this link.