Antique Silver Plate Ice Bucket / Champagne Cooler

[Faustas]

Hello,

I would like some assistance in identifying this hallmark. I believe it may possibly be French? If anyone could also help me in explaining the number (25) next to the makers mark which looks like A.G to me.

I appreciate any type of help, thank you.

[img]blob:https://imgur.com/80c4dae4-8fbd-4a87-884f-42557feaac47[/img]

[Faustas]

[Faustas]

I've learned that 25 is 25 grams of silver was used to plate this piece, could anyone assist me with the maker? Thank you.