Worn hallmark, sterling guilloche perfume bottle.please help

[crystal4me]

Hi all and God Bless. I was blessed with this little perfume bottle the other day and haven't been able to identify the hallmark on it, I have checked and rechecked the site with no results, this is a very important piece to me and would love to find out where it came from and how old it is. I did the very best I could with the pictures, I hope someone can help me. Thanks so much. Brad.