Pretty coin. The French government issued these coins from 1929 through 1953, but changed there size and composition over the years as follows:

1929 through 1939: silver, about 28 mm diamter
1945 through 1949: copper-nickel, about 26 mm diameter
1950 through 1959: aluminum-bronze, about 20 mm diameter

Only a few specific dates are valuable. All other dates, like the 1948 coin inquired about, are worth less than one US dollar in worn condition, and less than $10 in fully uncirculated condition.

Here are the *good dates and mint marks* with their catalog values quoted for average circulated condition:

1937: $125
1945: $30
1946B: $35
1947B: $6

Use our Important Terminology link to properly intepret these catalog values.