That's kind of a neat coin, isn't it, Samantha? These coins were minted in aluminum bronze from 1920 to 1929. There are 100 centimes in a franc, so Samantha's 50 centime coin is half a French franc. The same pattern was used for the 1 franc and 2 francs coins, with the 'bon pour' ('good for') annotation changed on the other side.

Here are some approximate catalog values for these coins:

50 CENTIMES
worn: less than $1 US dollar
averge circulated (like our picture): $1
well preserved: $3
fully uncirculated: $10
coins dated 1921, 1928, and 1929 are worth about three times these values

1 FRANC
worn: less than $1 US dollar
averge circulated (like our picture): $1
well preserved: $3
fully uncirculated: $10
coins dated 1920, 1926, and 1927 are worth about three times these values

2 FRANCS
worn: $1 US dollar
averge circulated (like our picture): $2
well preserved: $4
fully uncirculated: $15
coins dated 1920 and 1926 are worth about three times these values
coins dated 1927 are rare and worth about $250 in average circulated condition

All the values above are catalog values. Use our Important Terminology page to properly interpret them and convert them to actual buy and sell prices.