Need help identifying the maker's mark on this champagne bucket (seau a champagne). the initials are "GM" with what looks like a propeller in between, all inside a lozenge.
the other hallmark is the minerva, 1st titre (950) I believe?
![Image](https://static.wixstatic.com/media/1de166_588c99b0c1ef47a091fa75360c1e3399.jpg/v1/fit/w_400,h_400,q_75,usm_0.50_1.20_0.00/1de166_588c99b0c1ef47a091fa75360c1e3399.jpg)
![Image](https://static.wixstatic.com/media/1de166_5c2cf2eef1754645a2bb8949a86383e3.jpg/v1/fit/w_400,h_400,q_75,usm_0.50_1.20_0.00/1de166_5c2cf2eef1754645a2bb8949a86383e3.jpg)
thank you in advance!
Happy New Year,
fermiersgeneraux