old block and tackle pulley from France..

This is a block and tackle pulley from France, it has 3 brass pulleys on it and as you can see the sides are a marred up on it, and it also has a metal plate on the side with some writing on it which all of it is not clearly visable..the brass pulleys are in very good shape with no chips in them..would like to know if there is any value to this type of pulley and if so does anybody know what it may be worth?..I have searched the internet on several different sites and have seen many of these, just not like this one..any help and info on it would be greatly appreciated..