That's not a coin. It is a souvenir for tourists from the SACRÉ COEUR cathedral in Paris.
If you are lucky to find anybody who wants to pay an equivalent of 1 or 2 Euro for it, don't hesitate and sell. Otherwise it might remain in your family for the next 100 years.
I collect coins and tokens which circulated in Africa from 18th century to 2000. I sell about 7000 illustrated world coins from http://www.avscoins.com.