Unidentified Coin - Madame - Help

Found this in a bunch of coins given to my son and me. Have know idea what it is.
Would like to properly identify. Help!!

Would like to properly identify. Help!!
0
Comments
DPOTD-3
'Emancipate yourselves from mental slavery'
CU #3245 B.N.A. #428
Don
or the 10 centimes depending on the size.
oops, spelling.