Copper Bronze French Athena Roman Relief Plaque

I’ve had this amazing bronze or copper 10.5” Plaque plate for a year or so now. It was found in a thrift store. I’ve only found a little info and huge range on pricing. So I was wondering if you could help me out. I have a large amount of vintage to antique collectible of various sorts. French Japy Freres Neo Ren style Athena Roman/Greek mythology stylemid 1800’s to early 1900’s. I have seen them in a few sizes and shaded going from $50 to $1000. Have no clue what to ask. Health issues force me to sell it ASAP.

any help is much appreciated :-)

Fair